Citazione Stile APA (7a Edizione)

Wessel, C. (1999). On the analytical representation of direction: An attempt applied chiefly to solving plane and spherical polygons. The Royal Danish Academy of Sciences and Letters.

Citazione stile Chigago Style (17a edizione)

Wessel, Caspar. On the Analytical Representation of Direction: An Attempt Applied Chiefly to Solving Plane and Spherical Polygons. Copenhagen: The Royal Danish Academy of Sciences and Letters, 1999.

Citatione MLA (9a ed.)

Wessel, Caspar. On the Analytical Representation of Direction: An Attempt Applied Chiefly to Solving Plane and Spherical Polygons. The Royal Danish Academy of Sciences and Letters, 1999.