APA (7th ed.) Citation

Castle, A., & Castle, E. (1901). The secret orchard / by A. and E. Castle. Macmillan.

Chicago Style (17th ed.) Citation

Castle, A., and E. Castle. The Secret Orchard / by A. and E. Castle. Macmillan, 1901.

MLA (9th ed.) Citation

Castle, A., and E. Castle. The Secret Orchard / by A. and E. Castle. Macmillan, 1901.

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