APA (7 वां संस्करण) प्रशस्ति पत्र
SpringerLink (Online service) & Leal Filho, W. Brazilian Journal of Science and Technology. Springer International Publishing : Imprint: Springer.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
SpringerLink (Online service) और Walter Leal Filho. Brazilian Journal of Science and Technology. Cham: Springer International Publishing : Imprint: Springer.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
SpringerLink (Online service) और Walter Leal Filho. Brazilian Journal of Science and Technology. Springer International Publishing : Imprint: Springer.
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