APA

Johannsen A., . (1918). Manual of petrographic methods. New York: McGraw-Hill.

Chicago

Johannsen Albert, . 1918. Manual of petrographic methods. New York: McGraw-Hill.

Harvard

Johannsen A., . (1918). Manual of petrographic methods. New York: McGraw-Hill.

MLA

Johannsen Albert, . Manual of petrographic methods. New York: McGraw-Hill. 1918.