Cita APA

Richards, O. W. n. 1., & Richards, O. W. n. 1. (1978). The Social wasps of the Americas: Excluding the Vespinae ([1.edition].). London: British Museum (Natural History).

Citación estilo Chicago

Richards, Owain Westmacott n. 1901-, y Owain Westmacott n. 1901- Richards. The Social Wasps of the Americas: Excluding the Vespinae. [1.edition]. London: British Museum (Natural History), 1978.

Cita MLA

Richards, Owain Westmacott n. 1901-, y Owain Westmacott n. 1901- Richards. The Social Wasps of the Americas: Excluding the Vespinae. [1.edition]. London: British Museum (Natural History), 1978.