Williamson, T. (1996). What makes it a heap? Kluwer Academic Publishers.
Cita Chicago Style (17a ed.)Williamson, T. What Makes It a Heap? Kluwer Academic Publishers, 1996.
Cita MLA (9a ed.)Williamson, T. What Makes It a Heap? Kluwer Academic Publishers, 1996.
Precaución: Estas citas no son 100% exactas.