PURVES, W. K., ORIANS, G. H., & HELLER, H. (1995). Life, the science of biology.-- ed.4. Sinauer.
芝加哥风格引文PURVES, William K., Gordon H. ORIANS, 与 H.Craig HELLER. Life, the Science of Biology.-- Ed.4. Sunderland: Sinauer, 1995.
MLA引文PURVES, William K., et al. Life, the Science of Biology.-- Ed.4. Sinauer, 1995.
警告：这些引文格式不一定是100％准确.