(2005). The hardness factor: How to achieve your best health and sexual fitness at any age / Steven Lamm with Gerald Sector Couzens.
Chicago Style (17th ed.) CitationThe Hardness Factor: How to Achieve Your Best Health and Sexual Fitness at Any Age / Steven Lamm with Gerald Sector Couzens. 2005.
MLA (9th ed.) CitationThe Hardness Factor: How to Achieve Your Best Health and Sexual Fitness at Any Age / Steven Lamm with Gerald Sector Couzens. 2005.
Warning: These citations may not always be 100% accurate.