(1993). Oxford illustrated encyclopedia: Vol.2 - The nature world. New York: Oxford Univ. Press.
Trích dẫn kiểu ChicagoOxford Illustrated Encyclopedia: Vol.2 - The Nature World. New York: Oxford Univ. Press, 1993.
MLA引文Oxford Illustrated Encyclopedia: Vol.2 - The Nature World. New York: Oxford Univ. Press, 1993.
警告:這些引文格式不一定是100%准確.