ST. Negoro,B. harahap. (1998). Ensiklopedia Matematika. Ghalia Indonesia.
Chicago Style (17th ed.) CitationST. Negoro,B. harahap. Ensiklopedia Matematika. Ghalia Indonesia, 1998.
MLA (8th ed.) CitationST. Negoro,B. harahap. Ensiklopedia Matematika. Ghalia Indonesia, 1998.
Warning: These citations may not always be 100% accurate.