APA Style
Levorsen, A.I. (1954).
Geology of petroleum .
San Francisco:
W.H Freeman.
Chicago Style
Levorsen, A.I.
Geology of petroleum.
San Francisco:
W.H Freeman,
1954.
Buku Teks.
MLA Style
Levorsen, A.I.
Geology of petroleum.
San Francisco:
W.H Freeman,
1954.
Buku Teks.
Turabian Style
Levorsen, A.I.
Geology of petroleum.
San Francisco:
W.H Freeman,
1954.
Buku Teks.