Cita APA

Harmer, S., & Shipley, A. (1970). Cambridge natural history: Flatworms etc. Today And Tommorow.

Citación estilo Chicago

Harmer, S.F, and A.E Shipley. Cambridge Natural History: Flatworms Etc. New Delhi: Today And Tommorow, 1970.

Cita MLA

Harmer, S.F, and A.E Shipley. Cambridge Natural History: Flatworms Etc. Today And Tommorow, 1970.