Gaya APA
Howell, Clark. (1971).
Early man / Clark Howell .
:
S.l.: Time-Life International.
Gaya Chicago
Howell, Clark.
Early man / Clark Howell.
:
S.l.: Time-Life International,
1971.
Buku.
Gaya MLA
Howell, Clark.
Early man / Clark Howell.
:
S.l.: Time-Life International,
1971.
Buku.
Gaya Turabian
Howell, Clark.
Early man / Clark Howell.
:
S.l.: Time-Life International,
1971.
Buku.