APA (7th ed.) Citation

Sonntag, A., & Mueller, F. v. (1860). Observations on terrestrial magnetism in Mexico: Conducted under the direction of Baron von Müller, with notes and illustrations of an examination of the volcano Popocatepetl and its vicinity. Smithsonian Institution.

Chicago Style (17th ed.) Citation

Sonntag, August, and Ferdinand von Mueller. Observations on Terrestrial Magnetism in Mexico: Conducted Under the Direction of Baron Von Müller, with Notes and Illustrations of an Examination of the Volcano Popocatepetl and Its Vicinity. [Washington: Smithsonian Institution, 1860.

MLA (9th ed.) Citation

Sonntag, August, and Ferdinand von Mueller. Observations on Terrestrial Magnetism in Mexico: Conducted Under the Direction of Baron Von Müller, with Notes and Illustrations of an Examination of the Volcano Popocatepetl and Its Vicinity. Smithsonian Institution, 1860.