APA

United States, . (198). Financial markets: preliminary observations on the October 1987 crash. [Washington, D.C: .

Chicago

United States, . 198. Financial markets: preliminary observations on the October 1987 crash. [Washington, D.C: .

Harvard

United States, . (198). Financial markets: preliminary observations on the October 1987 crash. [Washington, D.C: .

MLA

United States, . Financial markets: preliminary observations on the October 1987 crash. [Washington, D.C: . 198.