Cita APA

Graham, M. W. R. D. (1969). Pteromalidae of north-western Europe (Hymenoptera: Chaleidoidea). British Museum (Natural History).

Citación estilo Chicago

Graham, Marcus William Robert DeVere. Pteromalidae of North-western Europe (Hymenoptera: Chaleidoidea). London: British Museum (Natural History), 1969.

Cita MLA

Graham, Marcus William Robert DeVere. Pteromalidae of North-western Europe (Hymenoptera: Chaleidoidea). British Museum (Natural History), 1969.