APA (7th ed.) Citation

Friedman, M., & Friedman, R. D. (1980). Free to choose: A personal statement. Harcourt Brace Jovanovich.

Chicago Style (17th ed.) Citation

Friedman, Milton, and Rose D. Friedman. Free to Choose: A Personal Statement. San Diego [etc.]: Harcourt Brace Jovanovich, 1980.

MLA (9th ed.) Citation

Friedman, Milton, and Rose D. Friedman. Free to Choose: A Personal Statement. Harcourt Brace Jovanovich, 1980.