SLLALAHI, Robert P.. Sister Cities Relations: Yesterday, Today and Tomorrow. Forum Manajemen, [S.l.], v. 12, n. 67, p. 29-33, dec. 1998. ISSN 2962-5483. Available at: <https://journal.prasetiyamulya.ac.id/journal/index.php/FM/article/view/202>. Date accessed: 22 nov. 2024.