Citazione Stile APA (7a Edizione)

Wilkinson, B. R. (1972). Reference services for undergraduate students: Four case studies. Scarecrow Press.

Citazione stile Chigago Style (17a edizione)

Wilkinson, Billy R. Reference Services for Undergraduate Students: Four Case Studies. Metuchen, N.J.: Scarecrow Press, 1972.

Citatione MLA (8a ed.)

Wilkinson, Billy R. Reference Services for Undergraduate Students: Four Case Studies. Scarecrow Press, 1972.