APA aipamena

Hägerstrand, T. (1985). The identification of progress in learning (1. publ.). Cambridge [u.a.].

Chicago Style aipamena

Hägerstrand, Torsten. The Identification of Progress in Learning. 1. publ. Cambridge [u.a.], 1985.

MLA aipamena

Hägerstrand, Torsten. The Identification of Progress in Learning. 1. publ. Cambridge [u.a.], 1985.