APA

Lyell C., The modern changes of the earth and its inhabitants, . (1873). Principles of geology, or, The modern changes of the earth and its inhabitants; considered as illustrative of geology. New York: D. Appleton and company.

Chicago

Lyell Charles, The modern changes of the earth and its inhabitants, . 1873. Principles of geology, or, The modern changes of the earth and its inhabitants; considered as illustrative of geology. New York: D. Appleton and company.

Harvard

Lyell C., The modern changes of the earth and its inhabitants, . (1873). Principles of geology, or, The modern changes of the earth and its inhabitants; considered as illustrative of geology. New York: D. Appleton and company.

MLA

Lyell Charles, The modern changes of the earth and its inhabitants, . Principles of geology, or, The modern changes of the earth and its inhabitants; considered as illustrative of geology. New York: D. Appleton and company. 1873.