Yen, J., & Langari, R. (1999). Fuzzy Logic: Intelligence, control, and information. Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Yen, John, agus Reza Langari. Fuzzy Logic: Intelligence, Control, and Information. Upper Saddle River: Prentice Hall, 1999.
Lua MLA (9ú heag.)Yen, John, agus Reza Langari. Fuzzy Logic: Intelligence, Control, and Information. Prentice Hall, 1999.
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