Cita APA (7a ed.)

Chainani, S., & Bruno, I. (2020). A crystal of time (First paperback edition.). Harper.

Cita Chicago Style (17a ed.)

Chainani, Soman, y Iacopo Bruno. A Crystal of Time. First paperback edition. New York, NY: Harper, 2020.

Cita MLA (8a ed.)

Chainani, Soman, y Iacopo Bruno. A Crystal of Time. First paperback edition. Harper, 2020.

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