Παραπομπή σε μορφή APA (7η εκδ.)

Jensen, H. (1993). Sustainable development in transportation: Preparations for the 21st century. Nordic Council of Ministers.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Jensen, Helge. Sustainable Development in Transportation: Preparations for the 21st Century. Copenhagen: Nordic Council of Ministers, 1993.

Παραπομπή σε μορφή MLA (9th εκδ.)

Jensen, Helge. Sustainable Development in Transportation: Preparations for the 21st Century. Nordic Council of Ministers, 1993.