Williams, C. B., Stevenson, A. H., & Williams. Cecil B. (1951). A research manual for college studies and papers (Rev. ed.). Harper.
Citazione stile Chigago Style (17a edizione)Williams, Cecil Brown, Allan H. Stevenson, e Williams. Cecil B. A Research Manual for College Studies and Papers. Rev. ed. New York: Harper, 1951.
Citatione MLA (9a ed.)Williams, Cecil Brown, et al. A Research Manual for College Studies and Papers. Rev. ed. Harper, 1951.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.