John S. Donaldson. Adaptation for oviposition into concealed cycad ovules in the cycad weevils Antliarhinus zamiae and A. signatus (Coleoptera: Curculionoidea) (англ.) // Biological Journal of the Linnean Society. — 1992-09-01. — Vol. 47, iss. 1. — P. 23–35. — ISSN0024-4066. — doi:10.1111/j.1095-8312.1992.tb00653.x.
John S. Donaldson. Adaptation for oviposition into concealed cycad ovules in the cycad weevils Antliarhinus zamiae and A. signatus (Coleoptera: Curculionoidea) (англ.) // Biological Journal of the Linnean Society. — 1992-09-01. — Vol. 47, iss. 1. — P. 23–35. — ISSN0024-4066. — doi:10.1111/j.1095-8312.1992.tb00653.x.