APA (7th ed.) Citation

Ferrier, F., & Ferrier, K. (2011). On the sapphire's trail #2. Graphic Universe.

Chicago Style (17th ed.) Citation

Ferrier, Florian, and Katherine Ferrier. On the Sapphire's Trail #2. Minneapolis: Graphic Universe, 2011.

MLA (9th ed.) Citation

Ferrier, Florian, and Katherine Ferrier. On the Sapphire's Trail #2. Graphic Universe, 2011.

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