Texas A&M University. (1988). Costa Rica/Texas A&M University: Collaborative programs in mathematics and its teaching. A&M University.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रTexas A&M University. Costa Rica/Texas A&M University: Collaborative Programs in Mathematics and Its Teaching. Texas, Estados Unidos: A&M University, 1988.
एमएलए (9वां संस्करण) प्रशस्ति पत्रTexas A&M University. Costa Rica/Texas A&M University: Collaborative Programs in Mathematics and Its Teaching. A&M University, 1988.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.