SHELDON, S. (1989). Bila esok tiba: Buku kedua. Gramedia.
Chicago Style (17th ed.) CitationSHELDON, Sidney. Bila Esok Tiba: Buku Kedua. Gramedia, 1989.
MLA (8th ed.) CitationSHELDON, Sidney. Bila Esok Tiba: Buku Kedua. Gramedia, 1989.
Warning: These citations may not always be 100% accurate.