Cita APA (7th ed.)

Wulff-Tilford, M., & Tilford, G. L. (1999). All you ever wanted to know about herbs for pets. BowTie Press.

Cita Chicago (17th ed.)

Wulff-Tilford, Mary, i Gregory L. Tilford. All You Ever Wanted to Know About Herbs for Pets. Irvine, Calif.: BowTie Press, 1999.

Cita MLA (8th ed.)

Wulff-Tilford, Mary, i Gregory L. Tilford. All You Ever Wanted to Know About Herbs for Pets. BowTie Press, 1999.