Lehman, R. M., & Conceição, S. C. O. (2014). Motivating and retaining online students: Research-based strategies that work (First edition.). Jossey-Bass.
Lua i Stíl Chicago (17ú heag.)Lehman, Rosemary M., agus Simone C. O. Conceição. Motivating and Retaining Online Students: Research-based Strategies That Work. First edition. San Francisco, CA: Jossey-Bass, 2014.
Lua MLA (9ú heag.)Lehman, Rosemary M., agus Simone C. O. Conceição. Motivating and Retaining Online Students: Research-based Strategies That Work. First edition. Jossey-Bass, 2014.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.