Cita APA (7th ed.)

Waddington, C. H. (1956). Principles of Embryology. George Allen & Unwin.

Cita Chicago (17th ed.)

Waddington, Conrad Hal. Principles of Embryology. London, United Kingdom: George Allen & Unwin, 1956.

Cita MLA (9th ed.)

Waddington, Conrad Hal. Principles of Embryology. George Allen & Unwin, 1956.