Cita APA (7th ed.)
Kyung Sik Woo, Y. K. S. Jeju Island Geopark - A Volcanic Wonder of Korea. Springer.
Cita Chicago (17th ed.)
Kyung Sik Woo, Young Kwan Sohn. Jeju Island Geopark - A Volcanic Wonder of Korea. Berlín, Alemania: Springer.
Cita MLA (9th ed.)
Kyung Sik Woo, Young Kwan Sohn. Jeju Island Geopark - A Volcanic Wonder of Korea. Springer.
Atenció: Aquestes cites poden no estar 100% correctes.