Klaiber, Jeffrey. «Gagliano, Joseph. Coca Prohibition in Peru. The Historical Debates. Tucson: The University of Arizona Press, 1994. 245 P». Histórica 18, no. 2 (febrero 22, 1994): 449-450. Accedido abril 20, 2024. https://revistas.pucp.edu.pe/index.php/historica/article/view/8429.