Widyati, R. (2002). Higiene Dan Sanitasi Umum Dan Perhotelan. Gramedia.
Chicago Style (17th ed.) CitationWidyati, Retno. Higiene Dan Sanitasi Umum Dan Perhotelan. Gramedia, 2002.
MLA (8th ed.) CitationWidyati, Retno. Higiene Dan Sanitasi Umum Dan Perhotelan. Gramedia, 2002.
Warning: These citations may not always be 100% accurate.