Kennedy, John F
Evanston, 1964
Buku Teks
Polycarpus Swantoro, author
Kepustakaan Populer Gramedia, 2019
Buku Teks
Schlesinger, Arthur Meier, author
Fawcett Publications, 1965
Buku Teks
Barnes, John A., author
American Management Association, 2005
eBooks
Emerson, Rupert, author
Harvard Univ. Press, 1960
Buku Teks