Darwin, C., Barrett, P. H., & Freeman, R. B. (1989). The effects of cross and self fertilization in the vegetable kingdom. Pickering.
Citace podle Chicago (17th ed.)Darwin, Charles, Paul H. Barrett, a R. B. Freeman. The Effects of Cross and Self Fertilization in the Vegetable Kingdom. London: Pickering, 1989.
Citace podle MLA (8th ed.)Darwin, Charles, et al. The Effects of Cross and Self Fertilization in the Vegetable Kingdom. Pickering, 1989.
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