Crowther, J. (1980). Introductory crosswords: For learners of English as a foreign language. Tokyo: Oxford University Press.
Dyfyniad Arddull ChicagoCrowther, Jonathan. Introductory Crosswords: For Learners of English As a Foreign Language. Tokyo: Oxford University Press, 1980.
Dyfyniad MLACrowther, Jonathan. Introductory Crosswords: For Learners of English As a Foreign Language. Tokyo: Oxford University Press, 1980.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.