Citazione Stile APA (7a Edizione)

Gregorio, H. C. (1983). Principles and practices of college teaching. R.P. Garcia.

Citazione stile Chigago Style (17a edizione)

Gregorio, Herman Cruz. Principles and Practices of College Teaching. Quezon City: R.P. Garcia, 1983.

Citatione MLA (9a ed.)

Gregorio, Herman Cruz. Principles and Practices of College Teaching. R.P. Garcia, 1983.