Παραπομπή σε μορφή APA (7η εκδ.)

Cypres, L. (1999). Let's speak business English: A practical guide for the speaker for a foreign language. Barron's Educational Series.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Cypres, Linda. Let's Speak Business English: A Practical Guide for the Speaker for a Foreign Language. Hauppauge, NY: Barron's Educational Series, 1999.

Παραπομπή σε μορφή MLA (8th εκδ.)

Cypres, Linda. Let's Speak Business English: A Practical Guide for the Speaker for a Foreign Language. Barron's Educational Series, 1999.