MARA, D. (1976). Sewage Treatment In Hot Climates Duncan Mara. John Wiley & Sons.
Čikaški stil citiranja (17. izdanje)MARA, Duncan. Sewage Treatment In Hot Climates Duncan Mara. John Wiley & Sons, 1976.
MLA način citiranja (8. izdanje)MARA, Duncan. Sewage Treatment In Hot Climates Duncan Mara. John Wiley & Sons, 1976.
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