Singer, Jefferson A.
The proper pirate: Robert Louis Stevenson's quest for identity
Oxford University Press, 2016
 eBooks
Awuy, Tommy
Hakekat dan logika kapitalisme suatu pendekatan dalam filsafat ekonomi Robert L. Heilbroner
Universitas Indonesia, 1989
 UI - Skripsi (Membership)
Ross, Lillian
Adlai Stevenson
J.B. Lippincott, 1966
 Buku Teks
The Stevenson wit
compiled and edited by Bill Adler
Doubleday, 1966
 Buku Teks
Mertins, Louis
Robert Frost life and Talks-Walking / Louis Mertins.
University of Oklahoma Press , 1965
 Buku Teks