Citazione APA

Olson, H. A., & Boll, J. J. (2005). Subject analysis in online catalogs (2nd. ed.). Libraries Unlimited.

Stile di citazione Chicago

Olson, Hope A., e John J. Boll. Subject Analysis in Online Catalogs. 2nd. ed. Colorado: Libraries Unlimited, 2005.

Citazione MLA

Olson, Hope A., e John J. Boll. Subject Analysis in Online Catalogs. 2nd. ed. Libraries Unlimited, 2005.