Gaya APA

[et.al.], S, L, B. (2011). Early response mechanisms of perennial ryegrass (Lolium perenne) to phosphorus deficiency . : Oxford University Press on behalf of the Annals of Botany Company.

Gaya MLA

[et.al.], Stephen, L., Byrne. "Early response mechanisms of perennial ryegrass (Lolium perenne) to phosphorus deficiency". : Oxford University Press on behalf of the Annals of Botany Company, 2011. e-journal.