APA-referens (7:e uppl.)
Habits and Ways in Great Britain and the United States: Habits and Ways in Great Britain and the United States. NCFU.
Chicago-referens (17:e uppl.)Habits and Ways in Great Britain and the United States: Habits and Ways in Great Britain and the United States. NCFU.
MLA-referens (8:e uppl.)Habits and Ways in Great Britain and the United States: Habits and Ways in Great Britain and the United States. NCFU.
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