Παραπομπή σε μορφή APA (7η εκδ.)

Blavatsky, H. P. (1921). The secret doctrine: The synthesis of science, religion, and philosophy / by H. P. Blavatsky. The Theosophical Publ. House.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Blavatsky, Helena P. The Secret Doctrine: The Synthesis of Science, Religion, and Philosophy / by H. P. Blavatsky. London: The Theosophical Publ. House, 1921.

Παραπομπή σε μορφή MLA (8th εκδ.)

Blavatsky, Helena P. The Secret Doctrine: The Synthesis of Science, Religion, and Philosophy / by H. P. Blavatsky. The Theosophical Publ. House, 1921.