APA (7e ed.) Bronvermelding

Sacaben, G. B. (1976). Income tax administration in the Bureau of Internal Revenue Region No. 6 [microform]. Photoduplication Service.

Chicago (17e ed.) Bronvermelding

Sacaben, Gregorio B. Income Tax Administration in the Bureau of Internal Revenue Region No. 6 [microform]. Quezon City: Photoduplication Service, 1976.

MLA (9e ed.) Bronvermelding

Sacaben, Gregorio B. Income Tax Administration in the Bureau of Internal Revenue Region No. 6 [microform]. Photoduplication Service, 1976.