Cita APA (7th ed.)

Birks, H. J. B., & Birks, H. H. (1980). Quaternary paleoecology. Edward Arnold.

Cita Chicago (17th ed.)

Birks, Harry John Betteley, i Hilary H. Birks. Quaternary Paleoecology. Londres: Edward Arnold, 1980.

Cita MLA (9th ed.)

Birks, Harry John Betteley, i Hilary H. Birks. Quaternary Paleoecology. Edward Arnold, 1980.