Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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