Coppens, C. (1886). A practical introduction to English rhetoric: Precepts and exercises. Schwartz, Kirwin & Fauss.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCoppens, Charles. A Practical Introduction to English Rhetoric: Precepts and Exercises. New York: Schwartz, Kirwin & Fauss, 1886.
एमएलए (8वां संस्करण) प्रशस्ति पत्रCoppens, Charles. A Practical Introduction to English Rhetoric: Precepts and Exercises. Schwartz, Kirwin & Fauss, 1886.
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