Cita APA (7th ed.)

Hawkins, J., Hughes, C., & Scotland, R. (1997). Primary homology assessment, characters and character states.

Cita Chicago (17th ed.)

Hawkins, J., C. Hughes, i R. Scotland. Primary Homology Assessment, Characters and Character States. 1997.

Cita MLA (9th ed.)

Hawkins, J., et al. Primary Homology Assessment, Characters and Character States. 1997.