ORUSA, Giulia.
 Sistema di promozione a carattere piramidale e nesso indiretto.
<strong>DPCE Online</strong>, [S.l.], v. 30, n. 2, july 2017.
ISSN 2037-6677.
Available at: &lt;<a href="https://www.dpceonline.it/index.php/dpceonline/article/view/401" target="_new">https://www.dpceonline.it/index.php/dpceonline/article/view/401</a>&gt;. Date accessed: 23 apr. 2024.
doi: <a href="http://dx.doi.org/10.57660/dpceonline.2017.401">http://dx.doi.org/10.57660/dpceonline.2017.401</a>.