APA (7th ed.) Citation

Blavatsky, H. P. (1979). The secret doctrine. The secret doctrine.

Chicago Style (17th ed.) Citation

Blavatsky, Helena P. "The Secret Doctrine." The Secret Doctrine 1979.

MLA (9th ed.) Citation

Blavatsky, Helena P. "The Secret Doctrine." The Secret Doctrine, 1979.

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