Cita APA (7th ed.)

Beals, K., & Willard, C. (1994). Mystery festival: Teacher's guide. Great Explorations in Math and Science (GEMS).

Cita Chicago (17th ed.)

Beals, Kevin, i Carolyn Willard. Mystery Festival: Teacher's Guide. Berkeley, CA: Great Explorations in Math and Science (GEMS), 1994.

Cita MLA (9th ed.)

Beals, Kevin, i Carolyn Willard. Mystery Festival: Teacher's Guide. Great Explorations in Math and Science (GEMS), 1994.