United States. Congress. House. Committee on Education and Labor. (1969). Campus unrest: Hearing, Ninety-first Congress, first session ... June 16, 1969. United States Government Printing Office.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)United States. Congress. House. Committee on Education and Labor. Campus Unrest: Hearing, Ninety-first Congress, First Session ... June 16, 1969. Washington: United States Government Printing Office, 1969.
Trích dẫn kiểu MLA (xuất bản lần thứ 9)United States. Congress. House. Committee on Education and Labor. Campus Unrest: Hearing, Ninety-first Congress, First Session ... June 16, 1969. United States Government Printing Office, 1969.
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