Citazione Stile APA (7a Edizione)

Valenzuela, J. Z. (1933). History of journalism in the Philippine Islands. [s.n.

Citazione stile Chigago Style (17a edizione)

Valenzuela, Jesus Z. History of Journalism in the Philippine Islands. Manila: [s.n, 1933.

Citatione MLA (9a ed.)

Valenzuela, Jesus Z. History of Journalism in the Philippine Islands. [s.n, 1933.