(1993). Just past the possible. New York: Macmillan-McGraw-Hill Pub. Co.
Trích dẫn kiểu ChicagoJust Past the Possible. New York: Macmillan-McGraw-Hill Pub. Co, 1993.
Deismireacht MLAJust Past the Possible. New York: Macmillan-McGraw-Hill Pub. Co, 1993.
Rabhadh: D'fhéadfadh nach mbeadh na deismireachtaí seo 100% cruinn i gcónaí.