APA (7th ed.) Citation

Baerends, G. P., & Drent, R. H. (1970). The herring gull and its egg. E. J. Brill.

Chicago Style (17th ed.) Citation

Baerends, G. P., and R. H. Drent. The Herring Gull and Its Egg. Leiden: E. J. Brill, 1970.

MLA (8th ed.) Citation

Baerends, G. P., and R. H. Drent. The Herring Gull and Its Egg. E. J. Brill, 1970.

Warning: These citations may not always be 100% accurate.