APA (7th ed.) Citation

Schmidt. (1991). 2500 solved promblems in college algebra and trigonometry. London.

Chicago Style (17th ed.) Citation

Schmidt. 2500 Solved Promblems in College Algebra and Trigonometry. McGraw-Hill: London, 1991.

MLA (9th ed.) Citation

Schmidt. 2500 Solved Promblems in College Algebra and Trigonometry. London, 1991.

Warning: These citations may not always be 100% accurate.