APA (7th ed.) Citation

Calvert, C. (1993). Teach yourself Windows Programming in 21 Days. Sams Publishing.

Chicago Style (17th ed.) Citation

Calvert, Charlie. Teach Yourself Windows Programming in 21 Days. Indiana: Sams Publishing, 1993.

MLA (9th ed.) Citation

Calvert, Charlie. Teach Yourself Windows Programming in 21 Days. Sams Publishing, 1993.

Warning: These citations may not always be 100% accurate.