Churchman, J. (1790). An explanation of the magnetic atlas, or variation chart, hereunto annexed: Projected on a plan entirely new, by which the magnetic variation on any part of the globe may be precisely determined, for any time, past, present, or future: and the variation and latitude being accurately known, the longitude is of consequence truly determined.
Chicago Style (17th ed.) CitationChurchman, John. An Explanation of the Magnetic Atlas, or Variation Chart, Hereunto Annexed: Projected on a Plan Entirely New, by Which the Magnetic Variation on Any Part of the Globe May Be Precisely Determined, for Any Time, Past, Present, or Future: And the Variation and Latitude Being Accurately Known, the Longitude Is of Consequence Truly Determined. 1790.
MLA (9th ed.) CitationChurchman, John. An Explanation of the Magnetic Atlas, or Variation Chart, Hereunto Annexed: Projected on a Plan Entirely New, by Which the Magnetic Variation on Any Part of the Globe May Be Precisely Determined, for Any Time, Past, Present, or Future: And the Variation and Latitude Being Accurately Known, the Longitude Is of Consequence Truly Determined. 1790.