APA

Erdman p., .The Crash of 79. London:Secker, 1976: .

Chicago

Erdman paul, .The Crash of 79. London:Secker, 1976: .

Harvard

Erdman p., .The Crash of 79. London:Secker, 1976: .

MLA

Erdman paul, .London:Secker, 1976: . .