Gaya APA
Horan, N.J. (1990).
Biological wastewater treatment systems : theory and operation .
New York:
John Wiley & Sons.
Gaya Chicago
Horan, N.J.
Biological wastewater treatment systems : theory and operation.
New York:
John Wiley & Sons,
1990.
Text.
Gaya MLA
Horan, N.J.
Biological wastewater treatment systems : theory and operation.
New York:
John Wiley & Sons,
1990.
Text.
Gaya Turabian
Horan, N.J.
Biological wastewater treatment systems : theory and operation.
New York:
John Wiley & Sons,
1990.
Print.