Gaya APA

HOYER, W, J., Paul, A, R. (2003). Adult development and aging Edisi 5 (FIFTH EDITION). New York: Mc Graw Hill.

Gaya MLA

HOYER, William, J., Paul, A., Roodin. "Adult development and aging Edisi 5". FIFTH EDITION New York: Mc Graw Hill, 2003. FAKULTAS PSIKOLOGI.