ˌsecondary ˈsource BrE AmE noun [countable]
a book, article etc that ↑ analyse s something such as a piece of literature or a historical event and that can be used to support your ideas in an ↑ essay
ˌsecondary ˈsource BrE AmE noun [countable]
a book, article etc that ↑ analyse s something such as a piece of literature or a historical event and that can be used to support your ideas in an ↑ essay
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012