Gaya APA
Spellman, Frank R. (2014).
Basic mathematics for water and wastewater operators .
Singapore:
CRC Press.
Gaya Chicago
Spellman, Frank R.
Basic mathematics for water and wastewater operators.
Singapore:
CRC Press,
2014.
Text.
Gaya MLA
Spellman, Frank R.
Basic mathematics for water and wastewater operators.
Singapore:
CRC Press,
2014.
Text.
Gaya Turabian
Spellman, Frank R.
Basic mathematics for water and wastewater operators.
Singapore:
CRC Press,
2014.
Print.