Cita APA (7th ed.)

Groen, P. (1967). The waters of the sea. Van Nostrand.

Cita Chicago (17th ed.)

Groen, P. The Waters of the Sea. Londres: Van Nostrand, 1967.

Cita MLA (9th ed.)

Groen, P. The Waters of the Sea. Van Nostrand, 1967.