Cita APA (7th ed.)

Clifford, E. A. (1973). A practical guide to LP-gas utilization (5th ed.). Harcourt.

Cita Chicago (17th ed.)

Clifford, Earle A. A Practical Guide to LP-gas Utilization. 5th ed. New York: Harcourt, 1973.

Cita MLA (8th ed.)

Clifford, Earle A. A Practical Guide to LP-gas Utilization. 5th ed. Harcourt, 1973.