APA

Leighton J. A., . (1923). The field of philosophy: an introduction to the study of philosophy. New York: D. Appleton and company.

Chicago

Leighton Joseph Alexander, . 1923. The field of philosophy: an introduction to the study of philosophy. New York: D. Appleton and company.

Harvard

Leighton J. A., . (1923). The field of philosophy: an introduction to the study of philosophy. New York: D. Appleton and company.

MLA

Leighton Joseph Alexander, . The field of philosophy: an introduction to the study of philosophy. New York: D. Appleton and company. 1923.