Cita APA (7th ed.)

Burrill, J., Clifford, M., & Scheaffer, R. (1998). Exploring symbols: Teacher's edition. Dale Seymour Publications.

Cita Chicago (17th ed.)

Burrill, Jack, Miriam Clifford, i Richard Scheaffer. Exploring Symbols: Teacher's Edition. White Plains: Dale Seymour Publications, 1998.

Cita MLA (9th ed.)

Burrill, Jack, et al. Exploring Symbols: Teacher's Edition. Dale Seymour Publications, 1998.