Cita APA (7a ed.)
Waste + Water Management Australia. Editorial Publ Consultants P/L.
Cita Chicago Style (17a ed.)
Waste + Water Management Australia. Editorial Publ Consultants P/L.
Cita MLA (9a ed.)
Waste + Water Management Australia. Editorial Publ Consultants P/L.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.