APA (7th ed.) Citation

Shepherd, D. (2001). Sams teach yourself XML in 21 daysDevan Shepherd. SAMS.

Chicago Style (17th ed.) Citation

Shepherd, Devan. Sams Teach Yourself XML in 21 DaysDevan Shepherd. SAMS, 2001.

MLA (8th ed.) Citation

Shepherd, Devan. Sams Teach Yourself XML in 21 DaysDevan Shepherd. SAMS, 2001.

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