APA (7. basım) Alıntı

PFEIFFER W. (1996). THE ENCY OF GROUP ACTIVITIES. PIEIFFER & CO.

Chicago Style (17. basım) Atıf

PFEIFFER W. THE ENCY OF GROUP ACTIVITIES. AMSTERDAN: PIEIFFER & CO, 1996.

MLA (9th ed.) Atıf

PFEIFFER W. THE ENCY OF GROUP ACTIVITIES. PIEIFFER & CO, 1996.