McDonnell Douglas Undifferentiated or Other Model
Flight Crew Air Transport Pilot (ATP)
Communication Breakdown; Confusion
ATC Issue All Types; Deviation / Discrepancy - Procedural Clearance; Ground Incursion Taxiway
Air Traffic Control Issued New Clearance; Flight Crew Became Reoriented
Chart Or Publication; Human Factors; Procedure
After landing; Tower cleared us to taxi to the ramp via A.  On taxi chart; A is depicted as parallel to runway.  Exited the runway at C.  On C; tower stated; 'Your instructions were to join A.'  I queried; 'would you like us to join A here?'  ATC said 'affirmative.'  As we taxied down A; noticed taxi sign at end of runway joining A to the end of the runway.  This is NOT depicted on Jepp charts.  I should have asked where ATC wanted us to join A.  Commercial charts need to be corrected to show A at the end of the runway.  ATC needs to be clear on their instructions.
Air Carrier First Officer reports a taxiway incursion at MMTO due to a vague clearance and depiction of the A taxiway on the airport diagram.