Ki Padmasusastra, author
Porstenlandhen, 1918
Buku Klasik
Sulistyoweni Widanarko, author
Fakultas Teknik Universitas Indonesia, 1999
UI - Laporan Penelitian
Highet, Gilbert
Pembangunan, 1961
Buku Teks
International Society for Educational Information
ISEI, 1987
Buku Teks
Ahmad Amin, author
Maktabah al-Nahdah al-Misr, 1957-1959
Buku Teks