Citazione Stile APA (7a Edizione)

Delos Reyes, R. P., & Perez, J. A. (1980). 47=Forty-seven communal gravity systems: Organization profile. Institute of Philippine Culture, Ateneo de Manila University.

Citazione stile Chigago Style (17a edizione)

Delos Reyes, Romana P., e Jessica Acosta Perez. 47=Forty-seven Communal Gravity Systems: Organization Profile. Quezon City: Institute of Philippine Culture, Ateneo de Manila University, 1980.

Citatione MLA (9a ed.)

Delos Reyes, Romana P., e Jessica Acosta Perez. 47=Forty-seven Communal Gravity Systems: Organization Profile. Institute of Philippine Culture, Ateneo de Manila University, 1980.