(1992). The American College Student, 1991. National Norms for 1987 and 1989 College Freshmen [microform].
Citazione stile Chigago Style (17a edizione)The American College Student, 1991. National Norms for 1987 and 1989 College Freshmen [microform]. 1992.
Citatione MLA (9a ed.)The American College Student, 1991. National Norms for 1987 and 1989 College Freshmen [microform]. 1992.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.