Abdul Gafur, author
Secretariate of the Minister of Youth Affairs, Ministry of Education and Culture, 1978
Buku Teks
Badan Pengkajian dan Pengembangan Kebijakan. Kementrian Luar Negeri Republik Indonesia, 2018
Buku Teks
edited by Michael Novak
Charles Scribner's Sons, 1968
Buku Teks
Starr, A.T.
Sir Isaac Pitman & Sons, 1965
Buku Teks
Ashton, Gail
Routledge, 2000
Buku Teks