APA

Rusen Ciprian A. B. J., . (2012). Step by Step. USA: O´Reilly.

Chicago

Rusen Ciprian Adrian Ballew Joli, . 2012. Step by Step. USA: O´Reilly.

Harvard

Rusen Ciprian A. B. J., . (2012). Step by Step. USA: O´Reilly.

MLA

Rusen Ciprian Adrian Ballew Joli, . Step by Step. USA: O´Reilly. 2012.