De Vries, H. A. (1987). Fitness after 50 (3rd ed.). National Book Store.
Chicago Style (17th ed.) CitationDe Vries, Herbert A. Fitness After 50. 3rd ed. Manila: National Book Store, 1987.
MLA (9th ed.) CitationDe Vries, Herbert A. Fitness After 50. 3rd ed. National Book Store, 1987.
Warning: These citations may not always be 100% accurate.