KNIGHT SUE. (1999). NLP SOLUTIONS. NICHOLAS B, PUB.
Cita Chicago (17th ed.)KNIGHT SUE. NLP SOLUTIONS. LONDON: NICHOLAS B, PUB, 1999.
Cita MLA (9th ed.)KNIGHT SUE. NLP SOLUTIONS. NICHOLAS B, PUB, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.