Cita APA (7a ed.)

Ahrens, L. H. (1968). Origin and distribution of the elements. Pergamon Press.

Cita Chicago Style (17a ed.)

Ahrens, L. H. Origin and Distribution of the Elements. Oxford [etc.]: Pergamon Press, 1968.

Cita MLA (9a ed.)

Ahrens, L. H. Origin and Distribution of the Elements. Pergamon Press, 1968.