Luginbill, P., & Beyer, A. H. (1921). Corn earworm as an enemy of vetch. Government printing office.
Chicago-čujuhus (17. p.)Luginbill, Philip, juo A. H. Beyer. Corn Earworm as an Enemy of Vetch. Washington: Government printing office, 1921.
MLA-čujuhus (9. p.)Luginbill, Philip, juo A. H. Beyer. Corn Earworm as an Enemy of Vetch. Government printing office, 1921.
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