Gaya APA

Werner, D., Newton, W, E. (2005). Nitrogen Fixation in Agriculture, Forestry, Ecology, and the Environment (1st ed.). Dordrecht: Springer.

Gaya MLA

Werner, Dietrich.., Newton, William, E.. "Nitrogen Fixation in Agriculture, Forestry, Ecology, and the Environment". 1st ed. Dordrecht: Springer, 2005. E Book.