Data Sources
Magazine Article - "Grande Prémio Histórico do Porto"; Motor Sport - Sep. 2005, Page 14
Forum Post - by Leprosus on Wednesday, 13 July, 2005 - 04:05 pm

Website - "Circuito da Boavista"; http://www.circuitodaboavista.com
email - from Roelard Smit on Mon 11/07/05 09:42
email - from Sal Chiappetta on Mon 08/12/03 16:24
email - from Sal Chiappetta on Tue 07/10/03 03:31
email - from Sal Chiappetta on Thu 18/09/03 01:17
Book - "Grand Prix Data Book" by David Hayhoe and David Holland; 2nd edition, 1995; ISBN 0-9525121-0-6
Book - "The Guinness Guide to International Motor Racing" by Peter Higham; Guinness Publishing Ltd., Enfield, United Kingdom; ISBN 0-85112-642-1