Παραπομπή σε μορφή APA (7η εκδ.)

Metcalfe, S. L. (1833). A new theory of terrestrial magnetism: (Read before the New-York Lyceum of Natural History.). G.& C.& H. Carvill.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Metcalfe, Samuel L. A New Theory of Terrestrial Magnetism: (Read Before the New-York Lyceum of Natural History.). New York: G.& C.& H. Carvill, 1833.

Παραπομπή σε μορφή MLA (8th εκδ.)

Metcalfe, Samuel L. A New Theory of Terrestrial Magnetism: (Read Before the New-York Lyceum of Natural History.). G.& C.& H. Carvill, 1833.