Gaya APA

Angel, J, J, A, J, J. (1999). Equity flex oftions : the financial engineer's most versatile tool.-- . America: Frank J. Fabozzi Associates.

Gaya MLA

Angel, James, J., Angel,, James, J.. "Equity flex oftions : the financial engineer's most versatile tool.--". America: Frank J. Fabozzi Associates, 1999. Buku.