APA aipamena

Diaz, R. C., Oppenfeld, H. v., & Oppenfeld, J. v. (1961). Case studies of farm families, Laguna Province, Philippines. Dept. of Agricultural Economics, College of Agriculture, University of the Philippines.

Chicago Style aipamena

Diaz, Ralph C., Horst von Oppenfeld, and Judith von Oppenfeld. Case Studies of Farm Families, Laguna Province, Philippines. [College, Laguna: Dept. of Agricultural Economics, College of Agriculture, University of the Philippines, 1961.

MLA aipamena

Diaz, Ralph C., et al. Case Studies of Farm Families, Laguna Province, Philippines. Dept. of Agricultural Economics, College of Agriculture, University of the Philippines, 1961.