Haak, J. R. (1970). Goal determination and the under-graduate library. California University Library, Educational Resources Information Center.
芝加哥风格引文Haak, John R. Goal Determination and the Under-graduate Library. San Diego : Washington: California University Library, Educational Resources Information Center, 1970.
MLA引文Haak, John R. Goal Determination and the Under-graduate Library. California University Library, Educational Resources Information Center, 1970.
警告：这些引文格式不一定是100％准确.