Hayder Khaleel Qurban Ali. (2012). Optimization of citric acid production by Aspergillus niger on paddy straw. School of Bioproses Engineering.
Čikaški stil citiranja (17. izdanje)Hayder Khaleel Qurban Ali. Optimization of Citric Acid Production by Aspergillus Niger on Paddy Straw. Kangar Perlis: School of Bioproses Engineering, 2012.
MLA način citiranja (8. izdanje)Hayder Khaleel Qurban Ali. Optimization of Citric Acid Production by Aspergillus Niger on Paddy Straw. School of Bioproses Engineering, 2012.
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