Yusuf, Y. 9 Ensiklopedi Muhammadiyah. Raja Grafindo Persada.
Chicago Style (17th ed.) CitationYusuf, Yunan. 9 Ensiklopedi Muhammadiyah. Raja Grafindo Persada.
MLA (8th ed.) CitationYusuf, Yunan. 9 Ensiklopedi Muhammadiyah. Raja Grafindo Persada.
Warning: These citations may not always be 100% accurate.