References
- Cardinal, R. (1993). A European anthology. In Driven to create: The Anthony Petullo collection of self-taught & outsider art. (pp. 11–18). Milwaukee: Milwaukee Art Museum.
- Congdon, K. (1987) Toward a theoretical approach to teaching folk art: A definition. Studies in Art Education, 28(2), 96–104.
- Congdon, K. (1991). Art worlds, environmental images, and art education: A folk art focus. Journal of Multicultural and Cross-Cultural Research in Art Education, 9(1), 65–72.
- Crate, B. (1984) Folk art comes of age. In C. Rosenak, & J. Rosenak (Eds.) Museum of American Folk Art encyclopedia of twentieth-century American folk art and artists. (pp. 13–16). New York: Abbeyville Press.
- Maizels, J. (1996). Raw creation: Outsider art and beyond. London: Phaidon Press.
- Manley, R. (1991) Separating the folk from their art. New Art Examiner, 9, 25–28.
- Nassie, A. (1987). Aspects of visionary art. In H. Mhire (Dir.) Baking in the sun: Visionary images from the South (pp. 8–27). Exhibition of selections from the collection of Sylvia and Warren Lowe. Lafayette, LA: University Art Museum, University of Southwestern Louisiana.
- Rosenak, C., & Rosenak, J. (1984). Museum of American folk art encyclopedia of twentieth-century American folk art and artists. New York: Abbeyville Press.