Gool, W. v. (1961). Fluorescence centres in ZnS. Philips Research Laboratories.
Čikaški stil citiranja (17. izdanje)Gool, W. van. Fluorescence Centres in ZnS. [Eindhoven: Philips Research Laboratories, 1961.
MLA način citiranja (8. izdanje)Gool, W. van. Fluorescence Centres in ZnS. Philips Research Laboratories, 1961.
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