APA (7th ed.) Citation

König, E., & Riedel, H. (1973). Systemtheoretische Didaktik. Beltz.

Chicago Style (17th ed.) Citation

König, Ernst, and Harald Riedel. Systemtheoretische Didaktik. Weinheim Basel: Beltz, 1973.

MLA (8th ed.) Citation

König, Ernst, and Harald Riedel. Systemtheoretische Didaktik. Beltz, 1973.

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