Παραπομπή σε μορφή APA (7η εκδ.)

Welford, R. (1995). Environmental strategy and sustainable development: The corporate challenge for the twenty-first century. Routledge.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Welford, Richard. Environmental Strategy and Sustainable Development: The Corporate Challenge for the Twenty-first Century. London and New York: Routledge, 1995.

Παραπομπή σε μορφή MLA (9th εκδ.)

Welford, Richard. Environmental Strategy and Sustainable Development: The Corporate Challenge for the Twenty-first Century. Routledge, 1995.