APA (7th ed.) Citation

Frey, C. (1971). Theorien des Curriculums. Beltz.

Chicago Style (17th ed.) Citation

Frey, Carl. Theorien Des Curriculums. Weinheim [u.a.]: Beltz, 1971.

MLA (9th ed.) Citation

Frey, Carl. Theorien Des Curriculums. Beltz, 1971.

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