APA引文

Williams, S. A., & Williams , R. C. (1948). Four freedoms histories or the people we are: A history for boy and girls V2.

Chicago Edition Citation

Williams, S. A., and R. C. Williams. Four Freedoms Histories or the People We Are: A History for Boy and Girls V2. 1948.

MLA引文

Williams, S. A., and R. C. Williams. Four Freedoms Histories or the People We Are: A History for Boy and Girls V2. 1948.

警告：這些引文格式不一定是100％准確.