Cita APA (7th ed.)

Ary, D., Jacobs, L. C., Sorensen, C. K., & Walker, D. A. (2014). Introduction to research in education (Edition 9, International edition.). Wadsworth Cengage Learning.

Cita Chicago (17th ed.)

Ary, Donald, Lucy Cheser Jacobs, Christine K. Sorensen, i David A. Walker. Introduction to Research in Education. Edition 9, International edition. Australia: Wadsworth Cengage Learning, 2014.

Cita MLA (9th ed.)

Ary, Donald, et al. Introduction to Research in Education. Edition 9, International edition. Wadsworth Cengage Learning, 2014.