APA (7. basım) Alıntı

Simpas, C. S. (1971). Demographic characteristics and problem areas of U.P. College of Agriculture freshmen. s.n.].

Chicago Style (17. basım) Atıf

Simpas, Carmencita S. Demographic Characteristics and Problem Areas of U.P. College of Agriculture Freshmen. [Quezon City: s.n.], 1971.

MLA (9th ed.) Atıf

Simpas, Carmencita S. Demographic Characteristics and Problem Areas of U.P. College of Agriculture Freshmen. s.n.], 1971.