Willett, G. M., Hyde, J. E., Uhrlaub, M. B. & Wendel, C. A. (2001). Relative activity of abdominal muscles during commonly prescribed strengthening exercises. The Journal of Strength and Conditioning Research, Colorado Springs 15(2001)4, S. 480-485, 3 Abb., 32 Lit..
APA (7th ed.) CitationWillett, G. M., Hyde, J. E., Uhrlaub, M. B., & Wendel, C. A. (2001). Relative activity of abdominal muscles during commonly prescribed strengthening exercises The Journal of Strength and Conditioning Research.
Chicago Style (17th ed.) CitationWillett, G. M., J. E. Hyde, M. B. Uhrlaub, and C. A. Wendel. "Relative Activity of Abdominal Muscles During Commonly Prescribed Strengthening Exercises." The Journal of Strength and Conditioning Research 2001.
MLA (9th ed.) CitationWillett, G. M., et al. "Relative Activity of Abdominal Muscles During Commonly Prescribed Strengthening Exercises." The Journal of Strength and Conditioning Research, 2001.