(1951). Hymenoptera of America North of Mexico: Synoptic catalog. Prepared cooperatively by specialists on the various groups of Hymenoptera. Unites States Government Print.Office.
Chicago-Zitierstil (17. Ausg.)Hymenoptera of America North of Mexico: Synoptic Catalog. Prepared Cooperatively by Specialists on the Various Groups of Hymenoptera. Washington: Unites States Government Print.Office, 1951.
MLA-Zitierstil (9. Ausg.)Hymenoptera of America North of Mexico: Synoptic Catalog. Prepared Cooperatively by Specialists on the Various Groups of Hymenoptera. Unites States Government Print.Office, 1951.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.