Gaya APA

Porter, D. (2005). The Official Gold's Gym Beginner's Guide to Fitness: The Authority On Fitnes Since 1965 . New York: McGraw Hill.

Gaya MLA

Porter, David. "The Official Gold's Gym Beginner's Guide to Fitness: The Authority On Fitnes Since 1965". New York: McGraw Hill, 2005. Electronic Resource.