APA-referens (7:e uppl.)

Herrin, A. N. (1984). Assessing the impact of development programs: Principles and applications. School of Economics, University of the Philippines.

Chicago-referens (17:e uppl.)

Herrin, Alejandro N. Assessing the Impact of Development Programs: Principles and Applications. Quezon City: School of Economics, University of the Philippines, 1984.

MLA-referens (9:e uppl.)

Herrin, Alejandro N. Assessing the Impact of Development Programs: Principles and Applications. School of Economics, University of the Philippines, 1984.