Gaya APA
Levin, Harold L.. (1983).
The earth throught time / Harold L. Levin (2nd ed.).
:
Philadelphia: Saunders.
Gaya Chicago
Levin, Harold L..
The earth throught time / Harold L. Levin.
2nd ed.
:
Philadelphia: Saunders,
1983.
Buku.
Gaya MLA
Levin, Harold L..
The earth throught time / Harold L. Levin.
2nd ed.
:
Philadelphia: Saunders,
1983.
Buku.
Gaya Turabian
Levin, Harold L..
The earth throught time / Harold L. Levin.
2nd ed.
:
Philadelphia: Saunders,
1983.
Buku.