Cita APA (7a ed.)

United States. Senate. (1928). National Conference on Outdoor Recreation. Government Printing Office.

Cita Chicago Style (17a ed.)

United States. Senate. National Conference on Outdoor Recreation. Washington: Government Printing Office, 1928.

Cita MLA (9a ed.)

United States. Senate. National Conference on Outdoor Recreation. Government Printing Office, 1928.