APA

Theobald J. O., . (2017). What the raven brings: the Ravenmaster trilogy. London: Zephyr.

Chicago

Theobald J O, . 2017. What the raven brings: the Ravenmaster trilogy. London: Zephyr.

Harvard

Theobald J. O., . (2017). What the raven brings: the Ravenmaster trilogy. London: Zephyr.

MLA

Theobald J O, . What the raven brings: the Ravenmaster trilogy. London: Zephyr. 2017.