Ordoñez, R. L. E. (1998). Solving the American League umpire crew scheduling problem using constraint login programming. UMI Company.
Chicago Style (17th ed.) CitationOrdoñez, René Leo E. Solving the American League Umpire Crew Scheduling Problem Using Constraint Login Programming. Ann Arbor Michigan: UMI Company, 1998.
MLA (9th ed.) CitationOrdoñez, René Leo E. Solving the American League Umpire Crew Scheduling Problem Using Constraint Login Programming. UMI Company, 1998.
Warning: These citations may not always be 100% accurate.