Quarrell, A. G. (1961). Niobium, tantalum, molybdenum and tungsten: Report of a conference held in the University of Sheffield, 20th-22nd September, 1960, and organized by the Dept. of Metallugy. Elsevier Pub. Co..
शिकागो स्टाइल उद्धरणQuarrell, Arthur George. Niobium, Tantalum, Molybdenum and Tungsten: Report of a Conference Held in the University of Sheffield, 20th-22nd September, 1960, and Organized by the Dept. of Metallugy. Amsterdam ; New York: Elsevier Pub. Co., 1961.
एमएलए उद्धरणQuarrell, Arthur George. Niobium, Tantalum, Molybdenum and Tungsten: Report of a Conference Held in the University of Sheffield, 20th-22nd September, 1960, and Organized by the Dept. of Metallugy. Elsevier Pub. Co., 1961.
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