APA (7th ed.) Citation

Magnetic and Meteorological Observatory (Philadelphia, NY). (1847). Observations at the Magnetic and Meteorological Observatory at the Girard College, Philadelphia.

Chicago Style (17th ed.) Citation

Magnetic and Meteorological Observatory (Philadelphia, NY). Observations at the Magnetic and Meteorological Observatory at the Girard College, Philadelphia. Washington, DC, 1847.

MLA (9th ed.) Citation

Magnetic and Meteorological Observatory (Philadelphia, NY). Observations at the Magnetic and Meteorological Observatory at the Girard College, Philadelphia. 1847.

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