Hackett, John T.
Economic planning in France / John T. Hackett
Harvard University Press , 1963
Buku Teks
Hackett, John
Economic planning in France/John Hackett
Harvard University Press, 1965
Buku Teks
Papalia, Diane E.
Human development : eighth edition
McGraw-Hill, 2001
Buku Teks SO
Henderson, I.F.
A dictionary of biological terms : eighth edition
Longman, 1975
Buku Referensi
Belver and Henry
Artikel Jurnal