APA (7th ed.) Citation

Readers Digest. (1983). Vanished civilisations. Readers Digest.

Chicago Style (17th ed.) Citation

Readers Digest. Vanished Civilisations. Sydney: Readers Digest, 1983.

MLA (9th ed.) Citation

Readers Digest. Vanished Civilisations. Readers Digest, 1983.

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