suardiman, s. p. (2011). PSIKOLOGI USIA LANJUT. Gajah Mada University Press.
Chicago Style (17th ed.) Citationsuardiman, siti partini. PSIKOLOGI USIA LANJUT. Gajah Mada University Press, 2011.
MLA (8th ed.) Citationsuardiman, siti partini. PSIKOLOGI USIA LANJUT. Gajah Mada University Press, 2011.
Warning: These citations may not always be 100% accurate.