VALLINS, G. (1965). Spelling: Revised by D.G. Scragg with a chapter on American spelling by John W. Clark. Andre Deutsch.
Čikaški stil citiranja (17. izdanje)VALLINS, G.H. Spelling: Revised by D.G. Scragg with a Chapter on American Spelling by John W. Clark. London: Andre Deutsch, 1965.
MLA način citiranja (9. izdanje)VALLINS, G.H. Spelling: Revised by D.G. Scragg with a Chapter on American Spelling by John W. Clark. Andre Deutsch, 1965.
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