APA引文

(1998). NTC vocabulary builders. NTC Pub. Group.

芝加哥风格引文

NTC Vocabulary Builders. Lincolnwood, Ill.: NTC Pub. Group, 1998.

MLA引文

NTC Vocabulary Builders. NTC Pub. Group, 1998.

警告：这些引文格式不一定是100％准确.