Safrit, M. J. (1990). Introduction to measurement in physical education and exercise science (2nd ed.). Times Mirror/Mosby College Pub..
Citace podle Chicago (17th ed.)Safrit, Margaret J. Introduction to Measurement in Physical Education and Exercise Science. 2nd ed. St. Louis: Times Mirror/Mosby College Pub., 1990.
Citace podle MLA (8th ed.)Safrit, Margaret J. Introduction to Measurement in Physical Education and Exercise Science. 2nd ed. Times Mirror/Mosby College Pub., 1990.
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