Ridley, P., & Woltschek, D. (1999). Krokodilija. Kolonna Publications.
Cita Chicago (17th ed.)Ridley, Philip, i Dmitrij Woltschek. Krokodilija. Twer: Kolonna Publications, 1999.
Cita MLA (8th ed.)Ridley, Philip, i Dmitrij Woltschek. Krokodilija. Kolonna Publications, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.