Retno, D. M. PENGARUH NIAT TERHADAP KEAKTIFAN LANSIA DALAM MENGIKUTI POSYANDU LANSIA DI PUSKESMAS KALIJUDAN, SURABAYA: Influencing Of Intention To Elderly Attend Posyandu In Puskesmas Kalijudan, Surabaya. J I K E B 2017, 3, 60-69.