Wallis, P. J. L. (1982). Portable programming. Macmillan.
Lua i Stíl Chicago (17ú heag.)Wallis, Peter J. L. Portable Programming. London: Macmillan, 1982.
Lua MLA (8ú heag.)Wallis, Peter J. L. Portable Programming. Macmillan, 1982.
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