Pechenik, J. A., & Jan A. Pechenik. Biology of the invertebrates. New York: McGraw-Hill Higher Education.

Pechenik, Jan A., و Jan A. Pechenik. Biology of the Invertebrates. New York: McGraw-Hill Higher Education.

Pechenik, Jan A., و Jan A. Pechenik. Biology of the Invertebrates. New York: McGraw-Hill Higher Education.