Bumblebees /
by John B. Free and Colin G. Butler ; with two appendices by Ian H. H. Yarrow ; illustrated with 46 photographs by Colin G. Butler.
APA Citation
Free, J. Brand., Butler, C. G. (Colin Gasking). (1959). Bumblebees. London: Collins.
MLA Citation
Free, John Brand, and Colin G. (Colin Gasking) Butler. Bumblebees. London: Collins, 1959.
Warning: These citations may not always be complete (especially for serials).