Gaya APA

Bohlool, J, L, T, G, &, B. (1992). Biological Nitrogen Fixaation For Sustainable Agriculture (Ed.:-, Jlh. Eksp=1). USA: Kluwer Academic Publisher Incorporates.

Gaya MLA

Bohlool, J.K., Ladha,, T., George, &, B.B.. "Biological Nitrogen Fixaation For Sustainable Agriculture". Ed.:-, Jlh. Eksp=1 USA: Kluwer Academic Publisher Incorporates, 1992. Text.