Παραπομπή σε μορφή APA (7η εκδ.)

Spencer, C. P., Blades, M., & Morsley, K. (1989). The child in the physical environment: The development of spatial knowledge and cognition. John Wiley and Sons.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Spencer, C. P., Mark Blades, και Kim Morsley. The Child in the Physical Environment: The Development of Spatial Knowledge and Cognition. Chichester: John Wiley and Sons, 1989.

Παραπομπή σε μορφή MLA (9th εκδ.)

Spencer, C. P., et al. The Child in the Physical Environment: The Development of Spatial Knowledge and Cognition. John Wiley and Sons, 1989.