Hagler, J.R.; Mueller, S.; Teuber, L.R.; Machtley, S.A.; Van Deynze, A. (2011), "Foraging range of honey bees, Apis mellifera, in alfalfa seed production fields", Journal of Insect Science, 11 (1): 1–12, doi:10.1673/031.011.14401, PMC3281370, PMID22224495
Hagler, J.R.; Mueller, S.; Teuber, L.R.; Machtley, S.A.; Van Deynze, A. (2011), "Foraging range of honey bees, Apis mellifera, in alfalfa seed production fields", Journal of Insect Science, 11 (1): 1–12, doi:10.1673/031.011.14401, PMC3281370, PMID22224495
pubmed.ncbi.nlm.nih.gov
Hagler, J.R.; Mueller, S.; Teuber, L.R.; Machtley, S.A.; Van Deynze, A. (2011), "Foraging range of honey bees, Apis mellifera, in alfalfa seed production fields", Journal of Insect Science, 11 (1): 1–12, doi:10.1673/031.011.14401, PMC3281370, PMID22224495