Marr, J., & Early English Books Online. (1683). Navigation in coasting, or, The sea-mans instructer: Containing severall theoreticall and practicall parts of that art, as also, some necessary points of the duty of a carefull sea-man : most pleasant and profitable for all young beginners, for whom it is designed. Aberdeen: Printed by Iohn Forbes, and are to be sold in Dundee.MLA Citation
Marr, John., and Early English Books Online. Navigation in Coasting, Or, The Sea-mans Instructer: Containing Severall Theoreticall and Practicall Parts of That Art, As Also, Some Necessary Points of the Duty of a Carefull Sea-man : Most Pleasant and Profitable for All Young Beginners, for Whom It Is Designed. Aberdeen: Printed by Iohn Forbes, and are to be sold in Dundee, 1683.