Schmitt, C. J. (1998). Invitation to languages: Foreign language exploratory program. Glencoe McGraw-Hill.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSchmitt, Conrad J. Invitation to Languages: Foreign Language Exploratory Program. New York: Glencoe McGraw-Hill, 1998.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSchmitt, Conrad J. Invitation to Languages: Foreign Language Exploratory Program. Glencoe McGraw-Hill, 1998.
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