BUTARBUTAR, Ferdinand.
 Mencermati Perdagangan Futures.
<strong>Forum Manajemen</strong>, [S.l.], v. 13, n. 68, p. 30-35, nov. 1999.
ISSN 2962-5483.
Available at: &lt;<a href="https://journal.prasetiyamulya.ac.id/journal/index.php/FM/article/view/214" target="_new">https://journal.prasetiyamulya.ac.id/journal/index.php/FM/article/view/214</a>&gt;. Date accessed: 06 july 2024.