APA (7th ed.) Citation

Krutwig, R. (1985). Karate - mein Freizeitsport. Humboldt.

Chicago Style (17th ed.) Citation

Krutwig, Rolf-Jürgen. Karate - Mein Freizeitsport. München: Humboldt, 1985.

MLA (9th ed.) Citation

Krutwig, Rolf-Jürgen. Karate - Mein Freizeitsport. Humboldt, 1985.

Warning: These citations may not always be 100% accurate.