Παραπομπή APA

Annie Besant. (2003). The riddle of life. The Theosophical Publishing House.

Παραπομπή Chicago Style

Annie Besant. The Riddle of Life. Chennai: The Theosophical Publishing House, 2003.

Παραπομπή MLA

Annie Besant. The Riddle of Life. The Theosophical Publishing House, 2003.