Cita APA (7th ed.)
Busch, D. D. (2009). David Busch's Canon EOS 50D guide to digital SLR photography. Course Technology PTR.
Cita Chicago (17th ed.)
Busch, David D. David Busch's Canon EOS 50D Guide to Digital SLR Photography. Boston, MA: Course Technology PTR, 2009.
Cita MLA (9th ed.)
Busch, David D. David Busch's Canon EOS 50D Guide to Digital SLR Photography. Course Technology PTR, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.