While Muidokan produces content through its own research, it happens to be part of a larger, worldwide movement including many honorable researchers, translators, instructors and enthusiasts. All of those people and their organizations have been contributing greatly to taking karate and traditional martial arts to a greater level of understanding, and a respectable part of the very studies carried out in Muidokan have been in one way or another benefited by the works of many of them. Among other by chance not included here (it is an ever-incomplete list), Muidokan greatly recommends the following resources, in no particular order:

Websites

Dan Djurdjevic’s The Way of Least Resistance:
http://www.wayofleastresistance.net/

Bruno Chagas’ Puro Karate:
http://purokarate.com.br/

Andreas Quast’s Ryukyu Bugei:
http://ryukyu-bugei.com/

Mario McKenna’s Okinawa Budo:
https://okinawabudo.wordpress.com/

Noah Legel’s Karate Obsession:
http://www.karateobsession.com

Mark Tankoshich’s Martial Arts Homepage:
http://www.marktankosich.com/

Hawaii Karate Seinenkai:
http://seinenkai.com/

Hawaii Karate Museum:
http://museum.hikari.us/

Charles Goodin’s Karate Thoughts:
http://karatejutsu.blogspot.com/

Motobu-ryu
https://www.motobu-ryu.org/

Naoki Motobu’s Motobu-ryu blog (English articles session)
https://ameblo.jp/motoburyu/theme-10097225876.html

The Chibana Project:
http://chibanaproject.blogspot.com/

Sanzinsoo’s Okinawan Goju-ryu Karate:
http://yamada-san.blogspot.com/

Books

Ryukyu Kenpo Toude by Gichin Funakoshi

Karate-do Kyohan by Gichin Funakoshi

Karate-do Nyumon by Gichin Funakoshi

Karate-do: My Way of Life by Gichin Funakoshi

The Essence of Karate by Gichin Funakoshi

Toude-jutsu no Kenkyu (The Study of China Hand Techniques) by Morinobu Itoman

Karate-do Taikan (An Overview of Karate-do) by Genwa Nakasone

Watashi no Karate-jutsu (My Art of Karate) by Choki Motobu

Karate-do Nyumon by Kenwa Mabuni and Genwa Nakasone

The Essence of Okinawan Karate-do by Shoshin Nagamine

Tales of Okinawa’s Great Masters by Shoshin Nagamine

Bubishi: The Classic Manual of Combat by Patrick McCarthy (translation)

Okinawan Goju-ryu I by Seikichi Toguchi

Okinawan Goju-ryu II by Seikichi Toguchi

Okinawa Den Goju-Ryu Karate-do by Ei’ichi Miyazato

Traditional Karate-do — Okinawa Goju-ryu Vol. 1 by Morio Higaonna

Hidden Karate: The True Bunkai For Heian Katas And Naihanchi by Gennosuke Higaki

Hidden Karate 2: Itosu’s Ten Precepts and Bunkai for Shotokan Katas by Gennosuke Higaki

Okinawan Karate by Mark Bishop

Karate 1.0 by Andreas Quast

A Stroll Along Ryukyu Martial Arts History by Andreas Quast

Go Rin No Sho (The Book of Five Rings) by Musashi Miyamoto

The Art of Hojo Undo by Michael Clarke