Cita APA (7th ed.)

Hagan, H. R. (1951). Embryology of the viviparous insects. The Ronald.

Cita Chicago (17th ed.)

Hagan, Harold R. Embryology of the Viviparous Insects. Nueva York: The Ronald, 1951.

Cita MLA (9th ed.)

Hagan, Harold R. Embryology of the Viviparous Insects. The Ronald, 1951.