P. Roberts

Parrington, Vernon Louis

P. Roberts, 1999 .

Potter, David M.

P. Roberts, 1999 .

The Power of Culture: Encounters Between China and the United States

P. Roberts, P. Roberts, 2016 .

Spence, Jonathan D.

P. Roberts, 1999 .

Henry P. Davison, World War I, and Anglo-American Relations

P. Roberts, 2005 .

Public attitudes toward mental illness in Africa and North America.

P. Roberts, K. S. St. Louis, P. Roberts, 2013, African journal of psychiatry.