APA استشهاد

Lieth, H., & Whittaker, r. H. (1975). Primary productivity of the biosphere. Springer-Verlag.

استشهاد بنمط شيكاغو

Lieth, Helmut, و robert H. Whittaker. Primary Productivity of the Biosphere. New York: Springer-Verlag, 1975.

MLA استشهاد

Lieth, Helmut, و robert H. Whittaker. Primary Productivity of the Biosphere. Springer-Verlag, 1975.