Cita APA (7a ed.)

Sheldon, B., & Ellegren, H. (1999). Sexual selection resulting from extrapair paternity in collared flycatchers.

Cita Chicago Style (17a ed.)

Sheldon, B., y H. Ellegren. Sexual Selection Resulting from Extrapair Paternity in Collared Flycatchers. 1999.

Cita MLA (9a ed.)

Sheldon, B., y H. Ellegren. Sexual Selection Resulting from Extrapair Paternity in Collared Flycatchers. 1999.