APA (7th ed.) Citation

Koch, F. (1985). Stichwörter zur Sexualerziehung. Beltz.

Chicago Style (17th ed.) Citation

Koch, Friedrich. Stichwörter Zur Sexualerziehung. Weinheim [u.a.]: Beltz, 1985.

MLA (8th ed.) Citation

Koch, Friedrich. Stichwörter Zur Sexualerziehung. Beltz, 1985.

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