Thomas, S. E. (1965). Commerce: Its theory and practice. Cassell and company limited.
Chicago-viite (17. p.)Thomas, S. Evelyn. Commerce: Its Theory and Practice. London: Cassell and company limited, 1965.
MLA-viite (9. p.)Thomas, S. Evelyn. Commerce: Its Theory and Practice. Cassell and company limited, 1965.
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