APA-čujuhus (7. p.)
Keeton, W. T., Gould, C. G., & Gould, J. L. (1986). Biological science (4th ed.). Norton.
Chicago-čujuhus (17. p.)
Keeton, William T., Carol Grant Gould, juo James L. Gould. Biological Science. 4th ed. New York: Norton, 1986.
MLA-čujuhus (9. p.)
Keeton, William T., et al. Biological Science. 4th ed. Norton, 1986.
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