Gordon, H. J., & Gordon, N. M. (1974). The Austrian Empire, abortive federation? D. C. Heath.
Cita Chicago (17th ed.)Gordon, Harold J., i Nancy M. Gordon. The Austrian Empire, Abortive Federation? Lexington, Mass.: D. C. Heath, 1974.
Cita MLA (8th ed.)Gordon, Harold J., i Nancy M. Gordon. The Austrian Empire, Abortive Federation? D. C. Heath, 1974.
Atenció: Aquestes cites poden no estar 100% correctes.