Dyfyniad APA

Nybakken, J. W. (1988). Marine biology: An ecological approach (2nd ed.). Harper&Row.

Dyfyniad Arddull Chicago

Nybakken, James W. Marine Biology: An Ecological Approach. 2nd ed. New York: Harper&Row, 1988.

Dyfyniad MLA

Nybakken, James W. Marine Biology: An Ecological Approach. 2nd ed. Harper&Row, 1988.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.