Παραπομπή APA

Williams, P. H., Richardson, L. L., & Thorp, R. W. ([2014]). Bumble Bees of North America Title is part of eBook package: De Gruyter Princeton University Press Complete eBook-Package 2014-2015. doi:10.1515/9781400851188

Παραπομπή Chicago Style

Williams, Paul H.,, Leif L. Richardson, και Robbin W. Thorp. "Bumble Bees of North America." Title Is Part of EBook Package: De Gruyter Princeton University Press Complete EBook-Package 2014-2015 [2014].

Παραπομπή MLA

Williams, Paul H.,, Leif L. Richardson, και Robbin W. Thorp. "Bumble Bees of North America." Title Is Part of EBook Package: De Gruyter Princeton University Press Complete EBook-Package 2014-2015 [2014].