Yusuf, S. (1981). Psychology umum bagian typology. Usaha Nasional.
Chicago Style (17th ed.) CitationYusuf, Sulaiman. Psychology Umum Bagian Typology. Usaha Nasional, 1981.
MLA (8th ed.) CitationYusuf, Sulaiman. Psychology Umum Bagian Typology. Usaha Nasional, 1981.
Warning: These citations may not always be 100% accurate.