Gaya APA
SMART, M, S., SMART, R, C.
(1977).
Children:
(
4th ed.)
.
New York:
Macmillan Publishing.
Gaya MLA
SMART, Mollie, S.., SMART, Russell, C..
"Children:".
4th ed.
New York:
Macmillan Publishing,
1977.
Buku.