Thornton, N. (1999). The direction of the sport of competitive swimming in the USA (over the last 50 years). American Swimming Magazine, 3 , 33-34.
APA (7th ed.) CitationThornton, N. (1999). The direction of the sport of competitive swimming in the USA (over the last 50 years). American Swimming Magazine, 3, 33-34.
Chicago Style (17th ed.) CitationThornton, N. "The Direction of the Sport of Competitive Swimming in the USA (over the Last 50 Years)." American Swimming Magazine 3 (1999): 33-34.
MLA (9th ed.) CitationThornton, N. "The Direction of the Sport of Competitive Swimming in the USA (over the Last 50 Years)." American Swimming Magazine, 3, 1999, pp. 33-34.
Warning: These citations may not always be 100% accurate.