Cita APA (7th ed.)

Barker, R. E. (1969). International copyright: The search for a formula for the 70s. Publishers Association.

Cita Chicago (17th ed.)

Barker, Ronald E. International Copyright: The Search for a Formula for the 70s. London: Publishers Association, 1969.

Cita MLA (8th ed.)

Barker, Ronald E. International Copyright: The Search for a Formula for the 70s. Publishers Association, 1969.