APA

Luquiens F. B., Schwan E., . (1951). An introduction to Old French phonology and morphology. New Haven: Yale university press.

Chicago

Luquiens Frederick Bliss, Schwan Eduard, . 1951. An introduction to Old French phonology and morphology. New Haven: Yale university press.

Harvard

Luquiens F. B., Schwan E., . (1951). An introduction to Old French phonology and morphology. New Haven: Yale university press.

MLA

Luquiens Frederick Bliss, Schwan Eduard, . An introduction to Old French phonology and morphology. New Haven: Yale university press. 1951.