Cite

Map of Extra-Peloponnesian Greece : as it stood at the beginning of the Peloponnesian war / by K. O. Muller.

MLA

Map of Extra-Peloponnesian Greece : as It Stood at the Beginning of the Peloponnesian War / by K. O. Muller. s. n., 1840. https://collections.library.yale.edu/catalog/15498878.

APA, 6th edition

Map of Extra-Peloponnesian Greece : as it stood at the beginning of the Peloponnesian war / by K. O. Muller. (1840). [Maps]. s. n., https://collections.library.yale.edu/catalog/15498878.