APA   Click to copy
Carozzi, F., Gonzalez, I., & Martinez-Mazza, R. Retail Competition Across the Border. (draft available upon request).

Chicago/Turabian   Click to copy
Carozzi, Felipe, Ignacio Gonzalez, and Rodrigo Martinez-Mazza. “Retail Competition Across the Border.” (Draft Available upon Request), n.d.

MLA   Click to copy
Carozzi, Felipe, et al. “Retail Competition Across the Border.” (Draft Available upon Request).

@unpublished{felipe-a,
  title = {Retail Competition Across the Border},
  journal = {(draft available upon request)},
  author = {Carozzi, Felipe and Gonzalez, Ignacio and Martinez-Mazza, Rodrigo}
}