Betts, A. D. (1951). The diseases of bees: Their signs, causes and treatment (2d edition.). Printed by Messrs. Hickmott.
Chicago-Zitierstil (17. Ausg.)Betts, Annie Dorothy. The Diseases of Bees: Their Signs, Causes and Treatment. 2d edition. Camberley, Surrey: Printed by Messrs. Hickmott, 1951.
MLA-Zitierstil (9. Ausg.)Betts, Annie Dorothy. The Diseases of Bees: Their Signs, Causes and Treatment. 2d edition. Printed by Messrs. Hickmott, 1951.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.