Ledgard, H. F., Hueras, J. F., & Nagin, P. A. (1979). PASCAL with style: Programming proverbs. Hayden Book Co.
Lua i Stíl Chicago (17ú heag.)Ledgard, Henry F., John F. Hueras, agus Paul A. Nagin. PASCAL with Style: Programming Proverbs. Rochelle Park, N.J: Hayden Book Co, 1979.
Lua MLA (9ú heag.)Ledgard, Henry F., et al. PASCAL with Style: Programming Proverbs. Hayden Book Co, 1979.
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