APA

Grant P. R. G. B. R., . (1997). Mating patterns of Darwin's finch hybrids determined by song and morphology. : .

Chicago

Grant P R Grant B R, . 1997. Mating patterns of Darwin's finch hybrids determined by song and morphology. : .

Harvard

Grant P. R. G. B. R., . (1997). Mating patterns of Darwin's finch hybrids determined by song and morphology. : .

MLA

Grant P R Grant B R, . Mating patterns of Darwin's finch hybrids determined by song and morphology. : . 1997.