Cita APA (7th ed.)

Gravetter, F. J., Wallnau, L. B., & Forzano, L. B. (2018). Essentials of statistics for the behavioral sciences (Edition 9.). Cengage Learning.

Cita Chicago (17th ed.)

Gravetter, Frederick J., Larry B. Wallnau, i Lori-Ann B. Forzano. Essentials of Statistics for the Behavioral Sciences. Edition 9. Boston, MA: Cengage Learning, 2018.

Cita MLA (9th ed.)

Gravetter, Frederick J., et al. Essentials of Statistics for the Behavioral Sciences. Edition 9. Cengage Learning, 2018.