Sawyer, J. (1862). A system of book-keeping drawn up for and expressly adapted to the tanning trade: Embracing transactions for an entire year (2d ed.). J. Sawyer.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Sawyer, Joseph. A System of Book-keeping Drawn Up for and Expressly Adapted to the Tanning Trade: Embracing Transactions for an Entire Year. 2d ed. London: J. Sawyer, 1862.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Sawyer, Joseph. A System of Book-keeping Drawn Up for and Expressly Adapted to the Tanning Trade: Embracing Transactions for an Entire Year. 2d ed. J. Sawyer, 1862.
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