Παραπομπή APA

Hagemann, G. (1994). The motivational manual. Multi-tech.

Παραπομπή Chicago Style

Hagemann, Gisela. The Motivational Manual. Bombay: Multi-tech, 1994.

Παραπομπή MLA

Hagemann, Gisela. The Motivational Manual. Multi-tech, 1994.