Martirez, C. R. (1985). The objectives, problems, and environment of the sugar industry in the Philippines: Survey, implications and recommendations of research chair paper. College of Business Administration, University of the Philippines.
Chicago-referens (17:e uppl.)Martirez, Concepcion R. The Objectives, Problems, and Environment of the Sugar Industry in the Philippines: Survey, Implications and Recommendations of Research Chair Paper. Quezon City: College of Business Administration, University of the Philippines, 1985.
MLA-referens (9:e uppl.)Martirez, Concepcion R. The Objectives, Problems, and Environment of the Sugar Industry in the Philippines: Survey, Implications and Recommendations of Research Chair Paper. College of Business Administration, University of the Philippines, 1985.