Παραπομπή APA
Eckersley, C. E. 1., & Kaufmann, W. b. (1952). English commercial practice and correspondence: A first course for foreign students. London: Longman.
Παραπομπή Chicago StyleEckersley, C. E. 1892-1967, and Walter b.1897 Kaufmann. English Commercial Practice and Correspondence: A First Course for Foreign Students. London: Longman, 1952.
Παραπομπή MLAEckersley, C. E. 1892-1967, and Walter b.1897 Kaufmann. English Commercial Practice and Correspondence: A First Course for Foreign Students. London: Longman, 1952.
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