APA (7th ed.) Citation

Marx, C. (2016). The western coast of Africa in Ptolemy's Geography and the location of his prime meridian. History of Geo & Space Sciences, 7(1), 27. https://doi.org/10.5194/hgss-7-27-2016

Chicago Style (17th ed.) Citation

Marx, Christian. "The Western Coast of Africa in Ptolemy's Geography and the Location of His Prime Meridian." History of Geo & Space Sciences 7, no. 1 (2016): 27. https://doi.org/10.5194/hgss-7-27-2016.

MLA (9th ed.) Citation

Marx, Christian. "The Western Coast of Africa in Ptolemy's Geography and the Location of His Prime Meridian." History of Geo & Space Sciences, vol. 7, no. 1, 2016, p. 27, https://doi.org/10.5194/hgss-7-27-2016.