Gray, M. (2004). Geodiversity: Valuing and conserving abiotic nature. England: John Wiley & Sons, Ltd.
Trích dẫn kiểu ChicagoGray, Murray. Geodiversity: Valuing and Conserving Abiotic Nature. England: John Wiley & Sons, Ltd, 2004.
MLA引文Gray, Murray. Geodiversity: Valuing and Conserving Abiotic Nature. England: John Wiley & Sons, Ltd, 2004.
警告:這些引文格式不一定是100%准確.