APA (7th ed.) Citation

Santos, A. E. (2000). Keyboarding in 30 days. Rex Book Store.

Chicago Style (17th ed.) Citation

Santos, Amparo E. Keyboarding in 30 Days. Manila: Rex Book Store, 2000.

MLA (9th ed.) Citation

Santos, Amparo E. Keyboarding in 30 Days. Rex Book Store, 2000.