Ferrini, Rebecca
Health in the later years
McGraw-Hill, 2013
Buku Teks
Thomas, Hugh
The Cuban revolution: 25 years later
Colorado Westview Press, 1984
Buku Teks
Looking back : 30 years later
Artikel Jurnal
Brazilian immunology: one hundred years later
Artikel Jurnal
UNESCO in Asia and the Pacific: 40 years on
Unesco Regional Office for Education in Asia and the Pacific, 1986
Buku Teks