Gaya APA
alfred petrick, jr. (1986).
energy resource assessment (1).
AMERICA:
Westview Press.
Gaya Chicago
alfred petrick, jr.
energy resource assessment.
1
AMERICA:
Westview Press,
1986.
Text.
Gaya MLA
alfred petrick, jr.
energy resource assessment.
1
AMERICA:
Westview Press,
1986.
Text.
Gaya Turabian
alfred petrick, jr.
energy resource assessment.
1
AMERICA:
Westview Press,
1986.
Print.