Citazione Stile APA (7a Edizione)

Rotor, N. S. (1980). Introduction to Philippine tourism. Integrated Research Center, De La Salle University.

Citazione stile Chigago Style (17a edizione)

Rotor, Nilda Servando. Introduction to Philippine Tourism. Manila: Integrated Research Center, De La Salle University, 1980.

Citatione MLA (9a ed.)

Rotor, Nilda Servando. Introduction to Philippine Tourism. Integrated Research Center, De La Salle University, 1980.