Kroll, Woodrow dan Don Hawkins. Hidup Prima di Usia Senja. - Yogyakarta: Andi, 2001. - 315p. 24 cm. Subjects--Topical Terms: LansiaLansia--Perawatan LC Class. No.: HQ1059.5.U5 / .K76 1999 Dewey Class. No.: 248.85