Cita APA (7a ed.)

Johannsen, O. A., & Butt, F. H. (1941). Embryology of insects and myriapods: The developmental history of insects, centipedes, and millepedes from egg desposition to hatching. McGraw-Hill.

Cita Chicago Style (17a ed.)

Johannsen, Oskar A., y Ferdinand H. Butt. Embryology of Insects and Myriapods: The Developmental History of Insects, Centipedes, and Millepedes from Egg Desposition to Hatching. New York: McGraw-Hill, 1941.

Cita MLA (8a ed.)

Johannsen, Oskar A., y Ferdinand H. Butt. Embryology of Insects and Myriapods: The Developmental History of Insects, Centipedes, and Millepedes from Egg Desposition to Hatching. McGraw-Hill, 1941.