Diez de la cortina, R. (1964). Cortina´s english in english: Intended for self - study and in schools. R.D. Cortina.
Čikaški stil citiranja (17. izdanje)Diez de la cortina, R. Cortina´s English in English: Intended for Self - Study and in Schools. New York: R.D. Cortina, 1964.
MLA način citiranja (9. izdanje)Diez de la cortina, R. Cortina´s English in English: Intended for Self - Study and in Schools. R.D. Cortina, 1964.
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