Dyfyniad APA
Longhurst, A. R. (2007). Ecological geography of the sea (2nd ed.). Academic Press.
Dyfyniad Arddull Chicago
Longhurst, Alan R. Ecological Geography of the Sea. 2nd ed. Burlington, MA, USA: Academic Press, 2007.
Dyfyniad MLA
Longhurst, Alan R. Ecological Geography of the Sea. 2nd ed. Academic Press, 2007.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.