Forster, A., & Epstein, B. R. (1956). Cross-currents: By Arnold Forster and Benjamin R. Epstein. Doubleday & Co..
Cita Chicago (17th ed.)Forster, Arnold, i Benjamin R. Epstein. Cross-currents: By Arnold Forster and Benjamin R. Epstein. Garden City, NY: Doubleday & Co., 1956.
Cita MLA (8th ed.)Forster, Arnold, i Benjamin R. Epstein. Cross-currents: By Arnold Forster and Benjamin R. Epstein. Doubleday & Co., 1956.
Atenció: Aquestes cites poden no estar 100% correctes.