Campbell, K. (2004). E-ffective writing for e-learning environments. Hersley, PA: INFOSCI.
Trích dẫn kiểu ChicagoCampbell, Kathy. E-ffective Writing for E-learning Environments. Hersley, PA: INFOSCI, 2004.
MLA引文Campbell, Kathy. E-ffective Writing for E-learning Environments. Hersley, PA: INFOSCI, 2004.
警告：这些引文格式不一定是100％准确.