Bombus
The humble-bee
Frederick William Lambert Sladen
The humble-bee
F. W. L. Sladen
Bumble bees of Western America (Hymenoptera: Apoidea)
W. P. Stephen
Studies on Scandinavian bumble bees (Hymenoptera, Apidae).
Astrid Løken
A monograph of the western hemisphere bumblebees (Hymenoptera: Apidae; Bombinae)
Herbert Edward Milliron
The subgeneric divisions of the genus Bombus latreille (Hymenoptera: Apidae)
Owain Westmacott Richards
Bumble Bees
D. V. Alford
Morphometric, colour, and enzyme variation in bumblebees (Hymenoptera, Apidae, Bombus) in Fennoscandia and Denmark
Antti Pekkarinen
Bumblebee distribution maps scheme
D. V. Alford
Bumble bees and cuckoo bumble bees of California (Hymenoptera, Apidae)
Robbin W. Thorp
Atlas of the bumblebees of the British Isles