APA

Buchan J., Lewis-Smith S. & Wear G. F. (1977). The thirty-nine steps. London: Longman.

Chicago

Buchan John, Lewis-Smith Suzanna and Wear George F. 1977. The thirty-nine steps. London: Longman.

Harvard

Buchan J., Lewis-Smith S. and Wear G. F. (1977). The thirty-nine steps. London: Longman.

MLA

Buchan John, Lewis-Smith Suzanna and Wear George F. The thirty-nine steps. London: Longman. 1977.