Cita APA (7th ed.)

Ellwood, E., & Dale, F. (1957). Tests on the development of clean preservative treatments for crossarms (Progress report no.1) Oil treatments. Forest Products Laboratory.

Cita Chicago (17th ed.)

Ellwood, E.L, i F.A Dale. Tests on the Development of Clean Preservative Treatments for Crossarms (Progress Report No.1) Oil Treatments. Australlia: Forest Products Laboratory, 1957.

Cita MLA (9th ed.)

Ellwood, E.L, i F.A Dale. Tests on the Development of Clean Preservative Treatments for Crossarms (Progress Report No.1) Oil Treatments. Forest Products Laboratory, 1957.