Hamilton, Robert. "Studies of the Rhynchophorous families Nemonychidae, Attelaeidae, and Rhynchitidae, with a revision of North American species of Attelabus linnaeus, Rhynchites Schneider, and Eugnamptus Schoenherr (Coleoptera: Curculionoidea) /." Doctoral dissertation, Ohio State University, 1969. http://rave.ohiolink.edu/etdc/view?acc_num=osu1486651646496673Chicago Manual of Style (17th edition)