Cita APA (7a ed.)

Dihel, N., & Shepherd, B. (2007). Modal Estimates of Services Barriers. OECD Publishing.

Cita Chicago Style (17a ed.)

Dihel, Nora, y Ben Shepherd. Modal Estimates of Services Barriers. Paris: OECD Publishing, 2007.

Cita MLA (9a ed.)

Dihel, Nora, y Ben Shepherd. Modal Estimates of Services Barriers. OECD Publishing, 2007.