APA (7th ed.) Citation

MacAlan, P. (1987). The valkyrie directive. W.H. Allen.

Chicago Style (17th ed.) Citation

MacAlan, Peter. The Valkyrie Directive. London: W.H. Allen, 1987.

MLA (9th ed.) Citation

MacAlan, Peter. The Valkyrie Directive. W.H. Allen, 1987.

Warning: These citations may not always be 100% accurate.