APA (7th ed.) Citation

Busch, D. D. (2011). David Busch's compact field guide for the Nikon D90. Course Technology PTR.

Chicago Style (17th ed.) Citation

Busch, David D. David Busch's Compact Field Guide for the Nikon D90. Boston, MA: Course Technology PTR, 2011.

MLA (9th ed.) Citation

Busch, David D. David Busch's Compact Field Guide for the Nikon D90. Course Technology PTR, 2011.

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