APA (7 ম সংস্করণ) উদ্ধৃতি

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

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

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.

M.L.A (8 ম সংস্করণ) উদ্ধৃতি

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