National Collegiate Honors Council. (2000). Journal of the National Collegiate Honors Council. National Collegiate Honors Council.
Dyfyniad Arddull ChicagoNational Collegiate Honors Council. Journal of the National Collegiate Honors Council. Birmingham, AL: National Collegiate Honors Council, 2000.
Dyfyniad MLANational Collegiate Honors Council. Journal of the National Collegiate Honors Council. National Collegiate Honors Council, 2000.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.