Peters, R. (1993). Crunching gravel: A Wisconsin boyhood in the thirties. University of Wisconsin Press.
Cita Chicago (17th ed.)Peters, Robert. Crunching Gravel: A Wisconsin Boyhood in the Thirties. Madison, Wis.: University of Wisconsin Press, 1993.
Cita MLA (9th ed.)Peters, Robert. Crunching Gravel: A Wisconsin Boyhood in the Thirties. University of Wisconsin Press, 1993.
Atenció: Aquestes cites poden no estar 100% correctes.