Crewe, R. M.; Blum, M. S.; Collingwood, C. A. 1972. Comparative analysis of alarm pheromones in the ant genus Crematogaster. Comparative Biochemistry and Physiology. B. Comparative Biochemistry 43:703-716.
Crozier, R. H. 1969b. Chromosome number polymorphism in an Australian ponerine ant. Canadian Journal of Genetics and Cytology 11:333-339. PDF
Crozier, R. H. 1975. Animal cytogenetics. 3. Insecta. (7) Hymenoptera. Berlin: Gebrüder Borntraeger, 95 pp.
Crozier, R. H. 1977b. Evolutionary genetics of the Hymenoptera. Annual Review of Entomology 22:263-288.