Heyneman, S. P. (1978). Textbooks and achievement: What we know. World Bank.
芝加哥风格引文Heyneman, Stephen P. Textbooks and Achievement: What We Know. Washington: World Bank, 1978.
MLA引文Heyneman, Stephen P. Textbooks and Achievement: What We Know. World Bank, 1978.
警告：这些引文格式不一定是100％准确.