 Cott, Hugh B. (1936). "The effectiveness of protective adaptations in the Hive-Bee, illustrated by experiments on the feeding reactions, habit formation, and memory of the common toad (Bufo bufo bufo)". Proceedings of the Zoological Society of London 106 (1): 111 – 133. doi: 10.1111 / j.1096-3642.1936.tb02283.x.
