Cita APA (7th ed.)
Willard, H. R., & Bryan, N. R. (1936). Algebra for college students. Scott, Foresman.
Cita Chicago (17th ed.)
Willard, Harley R., i Noah R. Bryan. Algebra for College Students. Chicago: Scott, Foresman, 1936.
Cita MLA (9th ed.)
Willard, Harley R., i Noah R. Bryan. Algebra for College Students. Scott, Foresman, 1936.
Atenció: Aquestes cites poden no estar 100% correctes.