Lua APA (7ú heag.)

Howden, W. E. (1987). Functional program testing and analysis. McGraw-Hill.

Lua i Stíl Chicago (17ú heag.)

Howden, William E. Functional Program Testing and Analysis. New York: McGraw-Hill, 1987.

Lua MLA (9ú heag.)

Howden, William E. Functional Program Testing and Analysis. McGraw-Hill, 1987.

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