Παραπομπή σε μορφή APA (7η εκδ.)

Adams, R., & Frey, D. (1990). !%@: : A Directory of Electronic Mail Addressing and Networks (2nd ed.). O' Reilly and Associates, Inc.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Adams, Rick, και Donnalyn Frey. !%@: : A Directory of Electronic Mail Addressing and Networks. 2nd ed. Sebastopol CA: O' Reilly and Associates, Inc, 1990.

Παραπομπή σε μορφή MLA (8th εκδ.)

Adams, Rick, και Donnalyn Frey. !%@: : A Directory of Electronic Mail Addressing and Networks. 2nd ed. O' Reilly and Associates, Inc, 1990.