Gaya APA
Moore, K, L. (1978).
Before we are born: basic embvryology and birth defects (2nd ed).
Philadelphia:
W.B Sounders.
Gaya MLA
Moore, Keith, L.
"Before we are born: basic embvryology and birth defects".
2nd ed
Philadelphia:
W.B Sounders,
1978.
print.