Cita APA (7th ed.)

Hubbard Merton H., Phipps Robert R., Thompson Richard L., & United States Patent Office. Low density coffee roasting process.

Cita Chicago (17th ed.)

Hubbard Merton H., Phipps Robert R., Thompson Richard L., i United States Patent Office. Low Density Coffee Roasting Process.

Cita MLA (9th ed.)

Hubbard Merton H., et al. Low Density Coffee Roasting Process.