Packer, B. (1960). Locating centers for tangent arcs. Machinery., 67, 140.
Chicago Style (17th ed.) CitationPacker, B. "Locating Centers for Tangent Arcs." Machinery. 67 (1960): 140.
MLA (9th ed.) CitationPacker, B. "Locating Centers for Tangent Arcs." Machinery., vol. 67, 1960, p. 140.
Warning: These citations may not always be 100% accurate.