Cita APA (7th ed.)
GRISIN, Nikolaj Ivanovic: Serebristye oblaka. Engl. Noctilucent Clouds. 1976.
Cita Chicago (17th ed.)
GRISIN, Nikolaj Ivanovic: Serebristye Oblaka. Engl. Noctilucent Clouds. 1976.
Cita MLA (9th ed.)
GRISIN, Nikolaj Ivanovic: Serebristye Oblaka. Engl. Noctilucent Clouds. 1976.
Atenció: Aquestes cites poden no estar 100% correctes.