APA (7th ed.) Citation

De Gracia, A. G. Q. (2009). Competence in college English. Rex Book Store.

Chicago Style (17th ed.) Citation

De Gracia, Alta Grace Q. Competence in College English. Manila: Rex Book Store, 2009.

MLA (9th ed.) Citation

De Gracia, Alta Grace Q. Competence in College English. Rex Book Store, 2009.