Martell, J. (1985). The twentieth-century world / John Martell (3rd ed.). Nelson.
Chicago Style (17th ed.) CitationMartell, John. The Twentieth-century World / John Martell. 3rd ed. Walton-on-Thames: Nelson, 1985.
MLA (9th ed.) CitationMartell, John. The Twentieth-century World / John Martell. 3rd ed. Nelson, 1985.
Warning: These citations may not always be 100% accurate.