Coles, A. (1927). Pitman's business man's encyclopaedia and dictionary of commerce (3rd. ed., rev., enlarged.). London: Sir Isaac Pitman & Sons.
Παραπομπή Chicago StyleColes, Arthur. Pitman's Business Man's Encyclopaedia and Dictionary of Commerce. 3rd. ed., rev., enlarged. London: Sir Isaac Pitman & Sons, 1927.
Παραπομπή MLAColes, Arthur. Pitman's Business Man's Encyclopaedia and Dictionary of Commerce. 3rd. ed., rev., enlarged. London: Sir Isaac Pitman & Sons, 1927.
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