Não informado. (1992). Professional Manager. Institute of Management Foundation.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Professional Manager. London: Institute of Management Foundation, 1992.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Professional Manager. Institute of Management Foundation, 1992.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.