APA

Ovason D., . (1999). The secret Zodiacs of Washington DC. London: Century.

Chicago

Ovason David, . 1999. The secret Zodiacs of Washington DC. London: Century.

Harvard

Ovason D., . (1999). The secret Zodiacs of Washington DC. London: Century.

MLA

Ovason David, . The secret Zodiacs of Washington DC. London: Century. 1999.