APA (7th ed.) Citation

Bigornia, M. L., & Ortega, G. (1981). Ang kalakalang Galeon: Mulang Maynila hanggang Acapulco. Children's Communication Center.

Chicago Style (17th ed.) Citation

Bigornia, Mike L., and Gualberto Ortega. Ang Kalakalang Galeon: Mulang Maynila Hanggang Acapulco. Quezon City: Children's Communication Center, 1981.

MLA (9th ed.) Citation

Bigornia, Mike L., and Gualberto Ortega. Ang Kalakalang Galeon: Mulang Maynila Hanggang Acapulco. Children's Communication Center, 1981.