APA

Hobbs H. H., Harvey M. C. & Hobbs H. H. (2007). A comparative study of functional morphology of the male reproductive systems in the Astacidea with emphasis on the freshwater crayfishes (Crustacea : Decapoda). Washington: Smithsonian institution Scholarly Press.

Chicago

Hobbs Horton Holcombe, Harvey Margaret C and Hobbs Horton H. 2007. A comparative study of functional morphology of the male reproductive systems in the Astacidea with emphasis on the freshwater crayfishes (Crustacea : Decapoda). Washington: Smithsonian institution Scholarly Press.

Harvard

Hobbs H. H., Harvey M. C. and Hobbs H. H. (2007). A comparative study of functional morphology of the male reproductive systems in the Astacidea with emphasis on the freshwater crayfishes (Crustacea : Decapoda). Washington: Smithsonian institution Scholarly Press.

MLA

Hobbs Horton Holcombe, Harvey Margaret C and Hobbs Horton H. A comparative study of functional morphology of the male reproductive systems in the Astacidea with emphasis on the freshwater crayfishes (Crustacea : Decapoda). Washington: Smithsonian institution Scholarly Press. 2007.