APA引文

Gripenberg, S. (1934). A study of the sediments of the north Baltic and adjoining seas. [s.n.].

Chicago Style (17th ed.) Citation

Gripenberg, Stina. A Study of the Sediments of the North Baltic and Adjoining Seas. Helsinki: [s.n.], 1934.

MLA引文

Gripenberg, Stina. A Study of the Sediments of the North Baltic and Adjoining Seas. [s.n.], 1934.