APA

Schüler A., . (18). Guide through North American. Berlin ; New York: publishers: J. Reichmann & Cantor.

Chicago

Schüler Arthur, . 18. Guide through North American. Berlin ; New York: publishers: J. Reichmann & Cantor.

Harvard

Schüler A., . (18). Guide through North American. Berlin ; New York: publishers: J. Reichmann & Cantor.

MLA

Schüler Arthur, . Guide through North American. Berlin ; New York: publishers: J. Reichmann & Cantor. 18.