Cita APA (7a ed.)

Shull, A. F. (1948). Heredity (4th. ed.). McGraw-Hill.

Cita Chicago Style (17a ed.)

Shull, A. Franklin. Heredity. 4th. ed. New York: McGraw-Hill, 1948.

Cita MLA (8a ed.)

Shull, A. Franklin. Heredity. 4th. ed. McGraw-Hill, 1948.