Weeks, M. E. (1956). Discovery of the elements (1956) (6th. ed.). Journal of Chemical Education.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWeeks, Mary Elvira. Discovery of the Elements (1956). 6th. ed. Easton, Pa: Journal of Chemical Education, 1956.
एमएलए (9वां संस्करण) प्रशस्ति पत्रWeeks, Mary Elvira. Discovery of the Elements (1956). 6th. ed. Journal of Chemical Education, 1956.
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