APA-referens (7:e uppl.)

Zamora, E. A. (2012). Cluster approach to industrial development. College of Business Administration, University of the Philippines.

Chicago-referens (17:e uppl.)

Zamora, Elvira A. Cluster Approach to Industrial Development. Quezon City: College of Business Administration, University of the Philippines, 2012.

MLA-referens (9:e uppl.)

Zamora, Elvira A. Cluster Approach to Industrial Development. College of Business Administration, University of the Philippines, 2012.