APA引文

WILLISON, G. F. (1968). The pilgrim's progress notes. Cliff notes.

芝加哥风格引文

WILLISON, George F. The Pilgrim's Progress Notes. Nebraska: Cliff notes, 1968.

MLA引文

WILLISON, George F. The Pilgrim's Progress Notes. Cliff notes, 1968.

警告：这些引文格式不一定是100％准确.