Παραπομπή σε μορφή APA (7η εκδ.)

Egbert, J., & Hanson-Smith, E. (1999). Call environments: Research, practice, and critical issues. Teachers of English to Speakers of Other Languages.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Egbert, Joy, και Elizabeth Hanson-Smith. Call Environments: Research, Practice, and Critical Issues. Alexandria, Va.: Teachers of English to Speakers of Other Languages, 1999.

Παραπομπή σε μορφή MLA (9th εκδ.)

Egbert, Joy, και Elizabeth Hanson-Smith. Call Environments: Research, Practice, and Critical Issues. Teachers of English to Speakers of Other Languages, 1999.