APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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