Suprapto. (2004). Kewarganegaraan 1b. Bumi Aksara.
Chicago Style (17th ed.) CitationSuprapto. Kewarganegaraan 1b. Bumi Aksara, 2004.
MLA (8th ed.) CitationSuprapto. Kewarganegaraan 1b. Bumi Aksara, 2004.
Warning: These citations may not always be 100% accurate.