APA

Townsend B., . (1990). A catalogue of the types of bloodsucking flies in the british museum ( Natural History). Cromwell Road: Department of entomology, British Museum ( natural history).

Chicago

Townsend B.C, . 1990. A catalogue of the types of bloodsucking flies in the british museum ( Natural History). Cromwell Road: Department of entomology, British Museum ( natural history).

Harvard

Townsend B., . (1990). A catalogue of the types of bloodsucking flies in the british museum ( Natural History). Cromwell Road: Department of entomology, British Museum ( natural history).

MLA

Townsend B.C, . A catalogue of the types of bloodsucking flies in the british museum ( Natural History). Cromwell Road: Department of entomology, British Museum ( natural history). 1990.