APA (7e ed.) Bronvermelding

Sadsad, B. D. (1974). Effective business psychology for Filipino students [microform]. Photoduplication Service.

Chicago (17e ed.) Bronvermelding

Sadsad, Brigido Dabu. Effective Business Psychology for Filipino Students [microform]. Quezon City: Photoduplication Service, 1974.

MLA (9e ed.) Bronvermelding

Sadsad, Brigido Dabu. Effective Business Psychology for Filipino Students [microform]. Photoduplication Service, 1974.