APA (7th ed.) Citation

Arroyo, S. R. (1992). Functional English: A guide to non-English speakers. National Book Store.

Chicago Style (17th ed.) Citation

Arroyo, Sandra Rodriguez. Functional English: A Guide to Non-English Speakers. Metro Manila: National Book Store, 1992.

MLA (9th ed.) Citation

Arroyo, Sandra Rodriguez. Functional English: A Guide to Non-English Speakers. National Book Store, 1992.