Evans J. John. (1900). V. 56; The Quarterly Journal of the Geological Society of London. 1900.
Cita Chicago (17th ed.)Evans J. John. V. 56; The Quarterly Journal of the Geological Society of London. 1900, 1900.
Cita MLA (9th ed.)Evans J. John. V. 56; The Quarterly Journal of the Geological Society of London. 1900, 1900.
Atenció: Aquestes cites poden no estar 100% correctes.