Shull, E. M. (1987). The butterflies of Indiana. Indiana Univ. Press.
Chicago Style (17th ed.) CitationShull, Ernest M. The Butterflies of Indiana. Bloomington u.a: Indiana Univ. Press, 1987.
MLA (9th ed.) CitationShull, Ernest M. The Butterflies of Indiana. Indiana Univ. Press, 1987.
Warning: These citations may not always be 100% accurate.