Παραπομπή σε μορφή APA (7η εκδ.)

Walmsley, D. J., & Lewis, G. J. (1995). People and environment: Behavioural approaches in human geography (2nd ed.). Longman Scientific Technical.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Walmsley, D. J., και G. J. Lewis. People and Environment: Behavioural Approaches in Human Geography. 2nd ed. Essex: Longman Scientific Technical, 1995.

Παραπομπή σε μορφή MLA (9th εκδ.)

Walmsley, D. J., και G. J. Lewis. People and Environment: Behavioural Approaches in Human Geography. 2nd ed. Longman Scientific Technical, 1995.