Cita APA

Crawford, D. L., & Crawford, D. L. (1914). A contribution toward a monograph of the Homopterous insects of the family Delphacide of North and South América. Washington, D.C.: Govt. Print. Off..

Citación estilo Chicago

Crawford, David L., y David L. Crawford. A Contribution Toward a Monograph of the Homopterous Insects of the Family Delphacide of North and South América. Washington, D.C.: Govt. Print. Off., 1914.

Cita MLA

Crawford, David L., y David L. Crawford. A Contribution Toward a Monograph of the Homopterous Insects of the Family Delphacide of North and South América. Washington, D.C.: Govt. Print. Off., 1914.