[et.al.], J. N. .. (1998). Operation research. Institut Teknologi Nasional Malang.
Chicago Style (17th ed.) Citation[et.al.], Juanda Napitupulu ... Operation Research. Institut Teknologi Nasional Malang, 1998.
MLA (8th ed.) Citation[et.al.], Juanda Napitupulu ... Operation Research. Institut Teknologi Nasional Malang, 1998.
Warning: These citations may not always be 100% accurate.