APA (7e ed.) Bronvermelding

Robles, F. C. (1988). Developing English proficiency in college. Goodwill Trading Company.

Chicago (17e ed.) Bronvermelding

Robles, Felicidad C. Developing English Proficiency in College. Manila: Goodwill Trading Company, 1988.

MLA (9e ed.) Bronvermelding

Robles, Felicidad C. Developing English Proficiency in College. Goodwill Trading Company, 1988.

Let op: Deze citaties zijn niet altijd 100% accuraat.