APA (7. basım) Alıntı

Pena, A. D. (1972). An analysis of the distribution of GIA projects 1966-70.

Chicago Style (17. basım) Atıf

Pena, Alberto D. An Analysis of the Distribution of GIA Projects 1966-70. Quezon City, 1972.

MLA (9th ed.) Atıf

Pena, Alberto D. An Analysis of the Distribution of GIA Projects 1966-70. 1972.