APA

Grant P. R., . (1994). Population variation and hybridization: Comparison of finches from two archipelagos. : .

Chicago

Grant P R, . 1994. Population variation and hybridization: Comparison of finches from two archipelagos. : .

Harvard

Grant P. R., . (1994). Population variation and hybridization: Comparison of finches from two archipelagos. : .

MLA

Grant P R, . Population variation and hybridization: Comparison of finches from two archipelagos. : . 1994.