St. Leger, M. (1776). An essay on the improvement of the art of navigation; or, A new invented method for finding the longitude at sea mechanically: By the help of a simple theorem founded in true principles of spherical geometry. By Mathew St. Leger. Printed for the author, By Christopher Walsh, (at No. 23,) on the Coal-Quay.
Chicago Style (17th ed.) CitationSt. Leger, Mathew. An Essay on the Improvement of the Art of Navigation; or, A New Invented Method for Finding the Longitude at Sea Mechanically: By the Help of a Simple Theorem Founded in True Principles of Spherical Geometry. By Mathew St. Leger. Dublin: Printed for the author, By Christopher Walsh, (at No. 23,) on the Coal-Quay, 1776.
MLA (9th ed.) CitationSt. Leger, Mathew. An Essay on the Improvement of the Art of Navigation; or, A New Invented Method for Finding the Longitude at Sea Mechanically: By the Help of a Simple Theorem Founded in True Principles of Spherical Geometry. By Mathew St. Leger. Printed for the author, By Christopher Walsh, (at No. 23,) on the Coal-Quay, 1776.