Campbell, C., & Hanna Kryszewska. Learner-based teaching (6a ed.).
芝加哥风格引文Campbell, Colin, 与 Hanna Kryszewska. Learner-based Teaching. 6a ed.
MLA引文Campbell, Colin, 与 Hanna Kryszewska. Learner-based Teaching. 6a ed.
警告：这些引文格式不一定是100％准确.
APA引文