A modern English grammar on historical principles

MLA

Jespersen, Otto. A Modern English Grammar On Historical Principles. 4th ed., with an app. Heidelberg: Winter, 1936.

APA

Jespersen, O. (1936). A modern English grammar on historical principles. 4th ed., with an app. Heidelberg: Winter.

Chicago

Jespersen, Otto, A Modern English Grammar On Historical Principles. 4th ed., with an app. Heidelberg: Winter, 1936.