APA Style
Spectrum work book 1 : A Communicative course in english / Sharon Abrams, David P. Rein, Donald R. H. Byrd. (1993).
Bairut:
.
MLA Style
Spectrum work book 1 : A Communicative course in english / Sharon Abrams, David P. Rein, Donald R. H. Byrd.
.
Bairut:
,
1993.
Text.