1.
Shea P, Hayes S, Vickers J. Online instructional effort measured through the lens of teaching presence in the community of inquiry framework: A re-examination of measures and approach. IRRODL [Internet]. 2010 Oct. 15 [cited 2024 Nov. 21];11(3):127-54. Available from: https://www.irrodl.org/index.php/irrodl/article/view/915