Gaya APA
Leakey, R.
(1994).
ASAL USUL MANUSIA
(
Cetakan Ketiga)
.
My Library:
Orion Publishing Group.
Gaya MLA
Leakey, Richard.
"ASAL USUL MANUSIA".
Cetakan Ketiga
My Library:
Orion Publishing Group,
1994.
Teks.