Kauman, P. B., Kaufman, P. B., & LaCroix, J. (1979). Plants, people and environment. Macmillan.
Chicago Style (17th ed.) ZitazioaKauman, Peter B., Peter B. Kaufman, eta J.Donald LaCroix. Plants, People and Environment. New York: Macmillan, 1979.
MLA (9th ed.) ZitazioaKauman, Peter B., et al. Plants, People and Environment. Macmillan, 1979.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.