APA
Marshall R. Wheeler, . (1968). Studies in Genetics. U.S.A: The University of Texas.
Chicago
Marshall R. Wheeler, . 1968. Studies in Genetics. U.S.A: The University of Texas.
Harvard
Marshall R. Wheeler, . (1968). Studies in Genetics. U.S.A: The University of Texas.
MLA
Marshall R. Wheeler, . Studies in Genetics. U.S.A: The University of Texas. 1968.