APA
Paul H., . (1889). Principles of the History of Language. New York: Macmillan and Co.
Chicago
Paul Hermann, . 1889. Principles of the History of Language. New York: Macmillan and Co.
Harvard
Paul H., . (1889). Principles of the History of Language. New York: Macmillan and Co.
MLA
Paul Hermann, . Principles of the History of Language. New York: Macmillan and Co. 1889.
