Zulkifli. (2012). Psikologi Perkembangan. Gramedia.
Chicago Style (17th ed.) CitationZulkifli. Psikologi Perkembangan. Gramedia, 2012.
MLA (8th ed.) CitationZulkifli. Psikologi Perkembangan. Gramedia, 2012.
Warning: These citations may not always be 100% accurate.