Wolff, R. (2001). Robert Wolff's book of great workouts: Everything you need to know to vary your routine and keep you motivated. Contemporary Books.
Chicago Style aipamenaWolff, Robert. Robert Wolff's Book of Great Workouts: Everything You Need to Know to Vary Your Routine and Keep You Motivated. Lincolnwood, Chicago, Ill: Contemporary Books, 2001.
MLA aipamenaWolff, Robert. Robert Wolff's Book of Great Workouts: Everything You Need to Know to Vary Your Routine and Keep You Motivated. Contemporary Books, 2001.
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