Gaya APA

Yoder, P, R., Vukobratovich, D. (2011). Field guide to binoculars and scopes . Washington: SPIE The International Society for Optical Engineering.

Gaya MLA

Yoder, Paul, R.., Vukobratovich, Daniel. "Field guide to binoculars and scopes". Washington: SPIE The International Society for Optical Engineering, 2011. E-book.