Gaya APA

SPELLMAN/C1, F, R. (1999). SPELLMAN S STANDARD HANDBOOK FOR WASTEWATER OPE . : TECHNOMIC PUBLICK.

Gaya MLA

SPELLMAN/C1, FRANK, R.. "SPELLMAN S STANDARD HANDBOOK FOR WASTEWATER OPE". : TECHNOMIC PUBLICK, 1999. Text Book.