Mark, L. (2011). The little black schoolbook: The secret to getting straight 'as' at school and university. Taylor Trade Publishing.
Dyfyniad Arddull ChicagoMark, Lopez. The Little Black Schoolbook: The Secret to Getting Straight 'as' At School and University. Taylor Trade Publishing, 2011.
Dyfyniad MLAMark, Lopez. The Little Black Schoolbook: The Secret to Getting Straight 'as' At School and University. Taylor Trade Publishing, 2011.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.