Gaya APA

STRONG, Robert A. (1989). Speculative markets : options,futures and hard assets . Singapore: Longman.

Gaya Chicago

STRONG, Robert A. Speculative markets : options,futures and hard assets. Singapore: Longman, 1989. Monograf.

Gaya MLA

STRONG, Robert A. Speculative markets : options,futures and hard assets. Singapore: Longman, 1989. Monograf.

Gaya Turabian

STRONG, Robert A. Speculative markets : options,futures and hard assets. Singapore: Longman, 1989. Monograf.