Cita APA (7a ed.)
International Journal of Operations Research & Information Systems (IJORIS).
Cita Chicago Style (17a ed.)
International Journal of Operations Research & Information Systems (IJORIS).
Cita MLA (9a ed.)
International Journal of Operations Research & Information Systems (IJORIS).
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.