APA引文

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

芝加哥风格引文

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

MLA引文

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