Penggayaan APA
PRICE, Elizabet. (1981).
Biogas Production and utilization .
America:
Ann Arbor Science.
Chicago Style
PRICE, Elizabet.
Biogas Production and utilization.
America:
Ann Arbor Science,
1981.
Buku.
MLA Style
PRICE, Elizabet.
Biogas Production and utilization.
America:
Ann Arbor Science,
1981.
Buku.
Turabian Style
PRICE, Elizabet.
Biogas Production and utilization.
America:
Ann Arbor Science,
1981.
Buku.