Liu, C. (1996). Smalltalk, objects, and design. toExcel.
Cita Chicago Style (17a ed.)Liu, Chamond. Smalltalk, Objects, and Design. San Jose: toExcel, 1996.
Cita MLA (8a ed.)Liu, Chamond. Smalltalk, Objects, and Design. toExcel, 1996.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.