Gaya APA
EHLERS, Victor M., STEEL, Ernest W.. (1958).
Municipal and Rural Sanitation .
Lodon:
McGraw Hill Book Company Inc.
Gaya Chicago
EHLERS, Victor M., STEEL, Ernest W..
Municipal and Rural Sanitation.
Lodon:
McGraw Hill Book Company Inc,
1958.
Teks.
Gaya MLA
EHLERS, Victor M., STEEL, Ernest W..
Municipal and Rural Sanitation.
Lodon:
McGraw Hill Book Company Inc,
1958.
Teks.
Gaya Turabian
EHLERS, Victor M., STEEL, Ernest W..
Municipal and Rural Sanitation.
Lodon:
McGraw Hill Book Company Inc,
1958.
Teks.