Citazione Stile APA (7a Edizione)

Safford, B. R. (2001). World Geography: A New Approach To Teaching, Learning, and Information Packaging. A Series on Web-based Reference Providers (Part IV).

Citazione stile Chigago Style (17a edizione)

Safford, Barbara Ripp. World Geography: A New Approach To Teaching, Learning, and Information Packaging. A Series on Web-based Reference Providers (Part IV). 2001.

Citatione MLA (9a ed.)

Safford, Barbara Ripp. World Geography: A New Approach To Teaching, Learning, and Information Packaging. A Series on Web-based Reference Providers (Part IV). 2001.