C.R Austin & R.V Short. (1990). Embryonic and fetal development (Second.). Australia.
Chicago Edition CitationC.R Austin i R.V Short. Embryonic and Fetal Development. Second. Australia, 1990.
Cita MLAC.R Austin i R.V Short. Embryonic and Fetal Development. Second. Australia, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.