Nybakken & James W. (2001). Marine Life: An Illustrated Encyclopedia of Invertebrates in the Sea (5th ed.). Benjamin Cummings.
Citazione stile Chigago Style (17a edizione)Nybakken e James W. Marine Life: An Illustrated Encyclopedia of Invertebrates in the Sea. 5th ed. San Francisco, CA: Benjamin Cummings, 2001.
Citatione MLA (9a ed.)Nybakken e James W. Marine Life: An Illustrated Encyclopedia of Invertebrates in the Sea. 5th ed. Benjamin Cummings, 2001.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.