Cita APA (7a ed.)

Valle, M. F., Huebner, E. S., & Suldo, S. (2004). Further evaluation of the children's hope scale. [s.n.].

Cita Chicago Style (17a ed.)

Valle, Michael F., E. Scott Huebner, y Shannon Suldo. Further Evaluation of the Children's Hope Scale. [S.l.]: [s.n.], 2004.

Cita MLA (9a ed.)

Valle, Michael F., et al. Further Evaluation of the Children's Hope Scale. [s.n.], 2004.