Cita APA (7a ed.)

Bracken, B. A., & Crawford, E. (2010). Basic concepts in early childhood educational standards: A 50-state review. [s.n.].

Cita Chicago Style (17a ed.)

Bracken, Bruce A., y Elisabeth Crawford. Basic Concepts in Early Childhood Educational Standards: A 50-state Review. [S.l.]: [s.n.], 2010.

Cita MLA (9a ed.)

Bracken, Bruce A., y Elisabeth Crawford. Basic Concepts in Early Childhood Educational Standards: A 50-state Review. [s.n.], 2010.