Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.