DEBONO EDWARD. (1983). FIVE-DAY COURSE IN THINKING. PENGUIN BOOKS INDIA (P) LTD.
Cita Chicago (17th ed.)DEBONO EDWARD. FIVE-DAY COURSE IN THINKING. NEW YORK: PENGUIN BOOKS INDIA (P) LTD, 1983.
Cita MLA (9th ed.)DEBONO EDWARD. FIVE-DAY COURSE IN THINKING. PENGUIN BOOKS INDIA (P) LTD, 1983.
Atenció: Aquestes cites poden no estar 100% correctes.