Cita APA

Christiansen, M. (1996). Play Itsafe, an anthology of Playground Safety (2a. ed.). Virginia: National Recreation and Park.

Citación estilo Chicago

Christiansen, Montyl. Play Itsafe, an Anthology of Playground Safety. 2a. ed. Virginia: National Recreation and Park, 1996.

Cita MLA

Christiansen, Montyl. Play Itsafe, an Anthology of Playground Safety. 2a. ed. Virginia: National Recreation and Park, 1996.