Cita APA (7a ed.)

Howard, T. (1995). The Smalltalk developer's guide to VisualWorks (1st print. ed.). [S.n.].

Cita Chicago Style (17a ed.)

Howard, Tim. The Smalltalk Developer's Guide to VisualWorks. 1st print. ed. Nueva York: [S.n.], 1995.

Cita MLA (9a ed.)

Howard, Tim. The Smalltalk Developer's Guide to VisualWorks. 1st print. ed. [S.n.], 1995.