1. ADFL guidelines for class size and workload for college and university teachers of foreign languages;ADFL Bulletin,2009
2. State University System of Florida Foreign Language and Linguistics Program review;Alatis,1992
3. Class differences: Online education in the United States, 2010;Allen,2010
4. Class size as related to the use of technology, educational practices, and outcomes in web-based nursing courses;Burruss;Journal of Professional Nursing,2009