Παραπομπή σε μορφή APA (7η εκδ.)

Snyder, H., & Davenport, E. (1997). Costing and pricing in the digital age: A practical guide for information services. Library Association Publishing.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Snyder, Herbert, και Elisabeth Davenport. Costing and Pricing in the Digital Age: A Practical Guide for Information Services. London: Library Association Publishing, 1997.

Παραπομπή σε μορφή MLA (8th εκδ.)

Snyder, Herbert, και Elisabeth Davenport. Costing and Pricing in the Digital Age: A Practical Guide for Information Services. Library Association Publishing, 1997.