Παραπομπή σε μορφή APA (7η εκδ.)

Haber, L. F. (1966). The nitrogen problem. Published for the Nuffield Foundation by the Longmans/ Penguin Books.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Haber, L. F. The Nitrogen Problem. London: Published for the Nuffield Foundation by the Longmans/ Penguin Books, 1966.

Παραπομπή σε μορφή MLA (9th εκδ.)

Haber, L. F. The Nitrogen Problem. Published for the Nuffield Foundation by the Longmans/ Penguin Books, 1966.