APA (7th ed.) Citation

Georgius, C. F., & Humbla, E. (1771). Specimen Historicum De Insula Sela Sudermanniae.

Chicago Style (17th ed.) Citation

Georgius, Carolus Fred, and Ericus Humbla. Specimen Historicum De Insula Sela Sudermanniae. Upsala, 1771.

MLA (9th ed.) Citation

Georgius, Carolus Fred, and Ericus Humbla. Specimen Historicum De Insula Sela Sudermanniae. 1771.

Warning: These citations may not always be 100% accurate.