Pettijohn, T. F. (1994). Sources. Dushkin Pub. Group.
芝加哥风格引文Pettijohn, Terry F. Sources. Guilford, Conn.: Dushkin Pub. Group, 1994.
MLA引文Pettijohn, Terry F. Sources. Dushkin Pub. Group, 1994.
警告：这些引文格式不一定是100％准确.
APA引文
Pettijohn, T. F. (1994). Sources. Dushkin Pub. Group.
芝加哥风格引文Pettijohn, Terry F. Sources. Guilford, Conn.: Dushkin Pub. Group, 1994.
MLA引文Pettijohn, Terry F. Sources. Dushkin Pub. Group, 1994.