PURVES, W. K., & ORIANS, G. H. (1987). Life: The science of biology.-- ed.2. Sinauer Associates inc.
芝加哥风格引文PURVES, William K., 与 Gordon H. ORIANS. Life: The Science of Biology.-- Ed.2. Sunderland: Sinauer Associates inc, 1987.
MLA引文PURVES, William K., 与 Gordon H. ORIANS. Life: The Science of Biology.-- Ed.2. Sinauer Associates inc, 1987.
警告：这些引文格式不一定是100％准确.