English : history, diversity, and change / edited by David Graddol, Dick Leith, and Joan Swann
Routledge, 1996
 Buku Teks
Standardising English : essay in the history of language change
edited by Joseph B. Trahern
University of Tenessee Press, 1989
 Buku Teks SO
Cobb, Nancy J.
Adolescence : continuity, change, and diversity
Mayfield , 2001
 Buku Teks SO
Cobb, Nancy J.
Adolescence continuity, change, and diversity
Mayfield Publishing, 2000
 Buku Teks SO
Caring for health : history and diversity
Charles Webster
Open University Press, 2001
 Buku Teks