APA Style
Helwig, James. A. (1986).
AAPG Bulletin American Association of Petroleum Geologist Volume 70/5 May 1986 (1).
Tulsa:
THE AMERICAN ASSOCIATION OF PETROLEUM GEOLOGISTS.
Chicago Style
Helwig, James. A.
AAPG Bulletin American Association of Petroleum Geologist Volume 70/5 May 1986.
1
Tulsa:
THE AMERICAN ASSOCIATION OF PETROLEUM GEOLOGISTS,
1986.
Text.
MLA Style
Helwig, James. A.
AAPG Bulletin American Association of Petroleum Geologist Volume 70/5 May 1986.
1
Tulsa:
THE AMERICAN ASSOCIATION OF PETROLEUM GEOLOGISTS,
1986.
Text.
Turabian Style
Helwig, James. A.
AAPG Bulletin American Association of Petroleum Geologist Volume 70/5 May 1986.
1
Tulsa:
THE AMERICAN ASSOCIATION OF PETROLEUM GEOLOGISTS,
1986.
Print.