Douglas-Young, John
Complete guide to reading schematic diagrams
Parker Publishing Company, 1979
 Buku Referensi
Hammersley, Martyn
Reading Ethnographic Research: a critical guide
Longman , 1990
 Buku Teks SO
Bradford, Richard, 1957-
The complete critical guide to John Milton
Routledge, 2001
 Buku Teks
Baines, Paul, 1961-
The complete critical guide to Alexander Pope
Routledge, 2000
 Buku Teks
Pattie, David
The complete critical guide to Samuel Beckett
Routledge , 2000
 Buku Teks