Butarbutar, F.
(1999).
 Mencermati Perdagangan Futures.
<em>Forum Manajemen, 13</em>(68), 30-35.
Retrieved from <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>