Παραπομπή σε μορφή APA (7η εκδ.)

Goodwin, T. W. (1968). Porphyrins and related compounds: Biochemical Society symposium no. 28 held in London, April, 1968. Academic Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Goodwin, T. W. Porphyrins and Related Compounds: Biochemical Society Symposium No. 28 Held in London, April, 1968. London: Academic Press, 1968.

Παραπομπή σε μορφή MLA (8th εκδ.)

Goodwin, T. W. Porphyrins and Related Compounds: Biochemical Society Symposium No. 28 Held in London, April, 1968. Academic Press, 1968.