APA Citation

FIRTH. (1985). WHEN it happened: A question-and-answer book about world history. London: Kingfisher.

Chicago Style Citation

FIRTH. WHEN It Happened: A Question-and-answer Book About World History. London: Kingfisher, 1985.

MLA Citation

FIRTH. WHEN It Happened: A Question-and-answer Book About World History. London: Kingfisher, 1985.

Warning: These citations may not always be 100% accurate.