APA (7th ed.) Citation
Mager, R. F., Thomas, H., & Rademacker, H. (1971). Lernziele und programmierter Unterricht: Preparing objectives for programmed instruction. Beltz.
Chicago Style (17th ed.) Citation
Mager, Robert F., Helga Thomas, and Hermann Rademacker. Lernziele Und Programmierter Unterricht: Preparing Objectives for Programmed Instruction. Weinheim [Bergstr.], Berlin, Basel: Beltz, 1971.
MLA (9th ed.) Citation
Mager, Robert F., et al. Lernziele Und Programmierter Unterricht: Preparing Objectives for Programmed Instruction. Beltz, 1971.
Warning: These citations may not always be 100% accurate.