APA引文

Ewins, P., Ewins, P., & Perrins, C. (1986). The ecology of black guillemots Cepphus grylle in Shetland.

Chicago Style (17th ed.) Citation

Ewins, P., Pete Ewins, and C. Perrins. The Ecology of Black Guillemots Cepphus Grylle in Shetland. 1986.

MLA引文

Ewins, P., et al. The Ecology of Black Guillemots Cepphus Grylle in Shetland. 1986.