APA استشهاد

Nybakken, J. W., & Bertness,Mark D. (1997). Marine biology: : an ecological approach (4th & 6th ed.). Benjamin Cummings.

استشهاد بنمط شيكاغو

Nybakken, James W., و Bertness,Mark D. Marine Biology: : An Ecological Approach. 4th & 6th ed. California: Benjamin Cummings, 1997.

MLA استشهاد

Nybakken, James W., و Bertness,Mark D. Marine Biology: : An Ecological Approach. 4th & 6th ed. Benjamin Cummings, 1997.