Cita APA (7a ed.)

Geiger, H., & Graw, E. (1989). Informational efficiency in speculative markets: A theoretical investigation. P. Lang.

Cita Chicago Style (17a ed.)

Geiger, Hans-Michael, y Ehrentraud Graw. Informational Efficiency in Speculative Markets: A Theoretical Investigation. Frankfurt am Main ; New York: P. Lang, 1989.

Cita MLA (8a ed.)

Geiger, Hans-Michael, y Ehrentraud Graw. Informational Efficiency in Speculative Markets: A Theoretical Investigation. P. Lang, 1989.