Παραπομπή σε μορφή APA (7η εκδ.)

De Guzman, P. E., & Robles, K. C. (2006). The role of contractual employment in the business firms and impact on the employees. University of the Philippines Diliman Extension Program in Pampanga.

Παραπομπή σε μορφή Chicago (17η εκδ.)

De Guzman, Priscilla E., και Kathyrine C. Robles. The Role of Contractual Employment in the Business Firms and Impact on the Employees. Pampanga: University of the Philippines Diliman Extension Program in Pampanga, 2006.

Παραπομπή σε μορφή MLA (9th εκδ.)

De Guzman, Priscilla E., και Kathyrine C. Robles. The Role of Contractual Employment in the Business Firms and Impact on the Employees. University of the Philippines Diliman Extension Program in Pampanga, 2006.