SITORUS, Sunday Ade.
 Marketing Communication Mix and Innovation on Customer Retention and Sustainable Competitive Advantages in Culinary Tourism Business Environment in the City of Medan.
<strong>Journal of Environmental Management and Tourism</strong>, [S.l.], v. 8, n. 8, p. 1567-1578, dec. 2017.
ISSN 2068-7729.
Available at: &lt;<a href="https://journals.aserspublishing.eu/jemt/article/view/1895" target="_new">https://journals.aserspublishing.eu/jemt/article/view/1895</a>&gt;. Date accessed: 03 may 2024.
doi: <a href="https://doi.org/10.14505/jemt.v8.8(24).13">https://doi.org/10.14505/jemt.v8.8(24).13</a>.