APA (7th ed.) Citation

Mason, C., & Dixon, J. (1769). Observations for determining the length of a degree of latitude in the provinces of Maryland and Pennsylvania, in North America: By Messieurs Charles Mason and Jeremiah Dixon. To which is prefixed an introduction: By the Rev. Nevil Maskelyne, B.D.F.R.S. Astronomer royal. [publisher not identified].

Chicago Style (17th ed.) Citation

Mason, Charles, and Jeremiah Dixon. Observations for Determining the Length of a Degree of Latitude in the Provinces of Maryland and Pennsylvania, in North America: By Messieurs Charles Mason and Jeremiah Dixon. To Which Is Prefixed an Introduction: By the Rev. Nevil Maskelyne, B.D.F.R.S. Astronomer Royal. London: [publisher not identified], 1769.

MLA (9th ed.) Citation

Mason, Charles, and Jeremiah Dixon. Observations for Determining the Length of a Degree of Latitude in the Provinces of Maryland and Pennsylvania, in North America: By Messieurs Charles Mason and Jeremiah Dixon. To Which Is Prefixed an Introduction: By the Rev. Nevil Maskelyne, B.D.F.R.S. Astronomer Royal. [publisher not identified], 1769.