Cita APA (7th ed.)

Drummond, A. M. 1. . . . e., & Wagner, R. H. j. e. (1931). Problems and opinions: A book of discussions of persistent questions for classes in speaking and writing. The Century co.

Cita Chicago (17th ed.)

Drummond, Alexander Magnus 1884- ed, i Russell Halderman joint ed Wagner. Problems and Opinions: A Book of Discussions of Persistent Questions for Classes in Speaking and Writing. New York, London: The Century co, 1931.

Cita MLA (9th ed.)

Drummond, Alexander Magnus 1884- ed, i Russell Halderman joint ed Wagner. Problems and Opinions: A Book of Discussions of Persistent Questions for Classes in Speaking and Writing. The Century co, 1931.