Hagemann, G. (1994). The motivational manual. Multi-tech.
Chicago Edition CitationHagemann, Gisela. The Motivational Manual. Bombay: Multi-tech, 1994.
Cita MLAHagemann, Gisela. The Motivational Manual. Multi-tech, 1994.
Atenció: Aquestes cites poden no estar 100% correctes.