Cita APA

Harmer, S. F., & Shipley, A. E. (1958). Cambridge natural history (Vol.7). Wheldon welley.

Chicago Edition Citation

Harmer, S. F., i A. E. Shipley. Cambridge Natural History (Vol.7). England: Wheldon welley, 1958.

Cita MLA

Harmer, S. F., i A. E. Shipley. Cambridge Natural History (Vol.7). Wheldon welley, 1958.