Παραπομπή APA

Stroud, J. (2006). Ptolemy's gate: Book III of the bartimaeus trilogy. Corgi book.

Παραπομπή Chicago Style

Stroud, Jonathan. Ptolemy's Gate: Book III of the Bartimaeus Trilogy. London: Corgi book, 2006.

Παραπομπή MLA

Stroud, Jonathan. Ptolemy's Gate: Book III of the Bartimaeus Trilogy. Corgi book, 2006.