A companion to Shakspeare
edited by David Scott Kastan
Blacwell, 1999
 Buku Teks
A companion to tragedy
edited, Rebecca Bushnell
Blackwell Publishing, 2005
 Buku Teks
Halliwell, Leslie
The Filmgoer's companion
HarperResource, 1976
 Buku Teks
A companion to ethics
edited by Peter Singer
Blackwell, 1990
 Buku Teks
Fischer-Cripps, Anthony C.
The chemistry companion
CRC Press, 2012
 Buku Teks