APA

Smith J. N. M. G. P. R. G. B. R. A. I. J. A. L. K., . (1978). Seasonal variation in feeding habits of Darwin's ground finches. : .

Chicago

Smith J N M Grant P R Grant B R Abbott I J Abbott L K, . 1978. Seasonal variation in feeding habits of Darwin's ground finches. : .

Harvard

Smith J. N. M. G. P. R. G. B. R. A. I. J. A. L. K., . (1978). Seasonal variation in feeding habits of Darwin's ground finches. : .

MLA

Smith J N M Grant P R Grant B R Abbott I J Abbott L K, . Seasonal variation in feeding habits of Darwin's ground finches. : . 1978.