Birdman, J. (1998). The training of Penny Heyns of South Africa - Olympic gold medalist 100 and 200 meter breaststroke. The World Swimming Coaches Association Gold Medal Clinic Series, Volume 2, Fort Lauderdale: The World Swimming Coaches Association (Hrsg.), 1998. - S. 110- 121, Tab..
APA (7th ed.) CitationBirdman, J. (1998). The training of Penny Heyns of South Africa - Olympic gold medalist 100 and 200 meter breaststroke The World Swimming Coaches Association Gold Medal Clinic Series, Volume 2.
Chicago Style (17th ed.) CitationBirdman, J. "The Training of Penny Heyns of South Africa - Olympic Gold Medalist 100 and 200 Meter Breaststroke." The World Swimming Coaches Association Gold Medal Clinic Series, Volume 2 1998.
MLA (9th ed.) CitationBirdman, J. "The Training of Penny Heyns of South Africa - Olympic Gold Medalist 100 and 200 Meter Breaststroke." The World Swimming Coaches Association Gold Medal Clinic Series, Volume 2, 1998.