APA-čujuhus (7. p.)
Purves, W. K., Heller, H. C., & Orians, G. H. (1992). Life, the science of biology (3rd ed.). Sinauer Associates ; W.H. Freeman.
Chicago-čujuhus (17. p.)
Purves, William K., H. Craig Heller, juo Gordon H. Orians. Life, the Science of Biology. 3rd ed. Sunderland, Mass. : Salt Lake City, Utah: Sinauer Associates ; W.H. Freeman, 1992.
MLA-čujuhus (9. p.)
Purves, William K., et al. Life, the Science of Biology. 3rd ed. Sinauer Associates ; W.H. Freeman, 1992.
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