Toy, A. D. (2012). Nature spirits, spirit guides, and ghosts: How to talk with and photograph beings of other realms (1st Quest ed.). Quest Books/Theosophical Publishing House.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Toy, Atala Dorothy. Nature Spirits, Spirit Guides, and Ghosts: How to Talk with and Photograph Beings of Other Realms. 1st Quest ed. Wheaton, Ill.: Quest Books/Theosophical Publishing House, 2012.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)Toy, Atala Dorothy. Nature Spirits, Spirit Guides, and Ghosts: How to Talk with and Photograph Beings of Other Realms. 1st Quest ed. Quest Books/Theosophical Publishing House, 2012.
Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.