Cita APA (7th ed.)

Luginbill, P., & Beyer, A. H. (1921). Corn earworm as an enemy of vetch. Government printing office.

Cita Chicago (17th ed.)

Luginbill, Philip, i A. H. Beyer. Corn Earworm as an Enemy of Vetch. Washington: Government printing office, 1921.

Cita MLA (9th ed.)

Luginbill, Philip, i A. H. Beyer. Corn Earworm as an Enemy of Vetch. Government printing office, 1921.