Gaya APA
Tank, Ronald Warren. (1976).
Focus on environental geology (second edition) .
New York:
Oxford Universiy Press.
Gaya Chicago
Tank, Ronald Warren.
Focus on environental geology (second edition).
New York:
Oxford Universiy Press,
1976.
Text.
Gaya MLA
Tank, Ronald Warren.
Focus on environental geology (second edition).
New York:
Oxford Universiy Press,
1976.
Text.
Gaya Turabian
Tank, Ronald Warren.
Focus on environental geology (second edition).
New York:
Oxford Universiy Press,
1976.
Print.