Gaya APA

Puchta, H., Gerngross, G. (1992). Pictures in action / Gunter Gerngross, Herbert Puchta . New York: Prentice Hall International.

Gaya MLA

Puchta, Herbert., Gerngross, Gunter. "Pictures in action / Gunter Gerngross, Herbert Puchta". New York: Prentice Hall International, 1992. Textbook.