Cita APA (7a ed.)
English Language Services, Inc. (1972). English this way. The Macmillan Company.
Cita Chicago Style (17a ed.)
English Language Services, Inc. English This Way. New York: The Macmillan Company, 1972.
Cita MLA (9a ed.)
English Language Services, Inc. English This Way. The Macmillan Company, 1972.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.