APA-viite (7. p.)

(1992). A Rule-Based and Hypertextual Electronic Mail System for Electronic Learning Environments Applying the Distributed Network Learning Framework / Michael J. Jacobson and James A. Levin. [microform].

Chicago-viite (17. p.)

A Rule-Based and Hypertextual Electronic Mail System for Electronic Learning Environments Applying the Distributed Network Learning Framework / Michael J. Jacobson and James A. Levin. [microform]. 1992.

MLA-viite (9. p.)

A Rule-Based and Hypertextual Electronic Mail System for Electronic Learning Environments Applying the Distributed Network Learning Framework / Michael J. Jacobson and James A. Levin. [microform]. 1992.