Wilkinson, B. R. (1970). The Undergraduate Library's Public Service Record: Reference Services.
Citazione stile Chigago Style (17a edizione)Wilkinson, Billy R. The Undergraduate Library's Public Service Record: Reference Services. 1970.
Citatione MLA (9a ed.)Wilkinson, Billy R. The Undergraduate Library's Public Service Record: Reference Services. 1970.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.