APA-viite (7. p.)

Robles, R. D., & Estioco, J. C. (2009). Improving grammar skills and more (Revised edition.). Rex Book Store.

Chicago-viite (17. p.)

Robles, Rosemarie D., ja Joannalyn C. Estioco. Improving Grammar Skills and More. Revised edition. Manila: Rex Book Store, 2009.

MLA-viite (9. p.)

Robles, Rosemarie D., ja Joannalyn C. Estioco. Improving Grammar Skills and More. Revised edition. Rex Book Store, 2009.