Campbell, Howard. “Foreword.” El Narcotraficante, by Mark Cameron Edberg, University of Texas Press, Austin, 2004, pp. ix-xii, www.jstor.org/stable/10.7560/701823.4. Accessed 2 Aug. 2021.
Campbell, H. (2004). Foreword. In Edberg M. (Author), El Narcotraficante (pp. Ix-Xii). Austin: University of Texas Press. Retrieved August 2, 2021, from http://www.jstor.org/stable/10.7560/701823.4
Campbell, Howard. "Foreword." In El Narcotraficante, by Edberg Mark Cameron, Ix-Xii. Austin: University of Texas Press, 2004. Accessed August 2, 2021. http://www.jstor.org/stable/10.7560/701823.4.
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