Science Research Associates. Mathematics Dept, Fouch, R. S., & Haas, R. (1968). SRA elementary mathematics program: Book 1. Science Research Associates.
Citazione stile Chigago Style (17a edizione)Science Research Associates. Mathematics Dept, Robert S. Fouch, e Raymond Haas. SRA Elementary Mathematics Program: Book 1. Chic.: Science Research Associates, 1968.
Citatione MLA (8a ed.)Science Research Associates. Mathematics Dept, et al. SRA Elementary Mathematics Program: Book 1. Science Research Associates, 1968.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.