Bretz, M. L., & Dvorak, T. (1992). Pasajes: Cultura (3rd ed.). McGraw-Hill.

Bretz, Mary Lee, and Trisha Dvorak. Pasajes: Cultura. 3rd ed. New York: McGraw-Hill, 1992.

Bretz, Mary Lee, and Trisha Dvorak. Pasajes: Cultura. 3rd ed. McGraw-Hill, 1992.