Litvin, J., & Lee Salk. (1991). How to be a super sitter. VGM Career Horizons.
Cita Chicago (17th ed.)Litvin, Jay, i Lee Salk. How to Be a Super Sitter. Lincolnwood, Ill., USA: VGM Career Horizons, 1991.
Cita MLA (9th ed.)Litvin, Jay, i Lee Salk. How to Be a Super Sitter. VGM Career Horizons, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.