Smith, K. J. (1986). Precalculus mathematics: A functional approach (Third edition.). Brooks/Cole Publishing Company.
Chicago-viite (17. p.)Smith, Karl J. Precalculus Mathematics: A Functional Approach. Third edition. Pacific Grove, California: Brooks/Cole Publishing Company, 1986.
MLA-viite (9. p.)Smith, Karl J. Precalculus Mathematics: A Functional Approach. Third edition. Brooks/Cole Publishing Company, 1986.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.