Gaya APA

Pits, M, G, B, J, H, B, W, D. (1987). Terrestrial Plant Ecology . Amsterdam, the Netherlands: The Benjamin/Cumming Publishing Company.

Gaya MLA

Pits, Michael, G., Barbour,, Jack, H., Burk,, Wanna, D.. "Terrestrial Plant Ecology". Amsterdam, the Netherlands: The Benjamin/Cumming Publishing Company, 1987. Text.