Παραπομπή σε μορφή APA (7η εκδ.)

Sheram, K., & Kline Dahl, K. (1993). Teaching guide for the environmental data book: A guide to statistics on the environment and development. World Bank.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Sheram, Katherine, και Kathryn Kline Dahl. Teaching Guide for the Environmental Data Book: A Guide to Statistics on the Environment and Development. Washington: World Bank, 1993.

Παραπομπή σε μορφή MLA (9th εκδ.)

Sheram, Katherine, και Kathryn Kline Dahl. Teaching Guide for the Environmental Data Book: A Guide to Statistics on the Environment and Development. World Bank, 1993.