University of New Hampshire. Institute on Disability & Shapiro-Barnard, S. (1996). Petroglyphs: The writing on the wall. Institute on Disability, University of New Hampshire.
Cita Chicago Style (17a ed.)University of New Hampshire. Institute on Disability y Susan Shapiro-Barnard. Petroglyphs: The Writing on the Wall. Concord: Institute on Disability, University of New Hampshire, 1996.
Cita MLA (9a ed.)University of New Hampshire. Institute on Disability y Susan Shapiro-Barnard. Petroglyphs: The Writing on the Wall. Institute on Disability, University of New Hampshire, 1996.
Precaución: Estas citas no son 100% exactas.