Hawkins, J., Hughes, C., & Scotland, R. (1997). Primary homology assessment, characters and character states.
Citace podle Chicago (17th ed.)Hawkins, J., C. Hughes, a R. Scotland. Primary Homology Assessment, Characters and Character States. 1997.
Citace podle MLA (9th ed.)Hawkins, J., et al. Primary Homology Assessment, Characters and Character States. 1997.
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