Cita APA (7th ed.)

Delobeau, F. (1971). The environment of the earth. Springer-Verlag.

Cita Chicago (17th ed.)

Delobeau, Francis. The Environment of the Earth. Berlin: Springer-Verlag, 1971.

Cita MLA (9th ed.)

Delobeau, Francis. The Environment of the Earth. Springer-Verlag, 1971.