APA (7th ed.) Citation

Portele, G. H. (1975). Lernen und Motivation. Weinheim [u.a.] : Beltz.

Chicago Style (17th ed.) Citation

Portele, Gerhard Heik. Lernen Und Motivation. Weinheim [u.a.] : Beltz, 1975.

MLA (9th ed.) Citation

Portele, Gerhard Heik. Lernen Und Motivation. Weinheim [u.a.] : Beltz, 1975.

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