Gaya APA
Warshawsky, Diane ; Byrd, Donald R.H. ; Veltfort, Anna. (1993).
Spectrum a communicative course in english: student book .
Englewood Cliffs:
Regents.
Gaya Chicago
Warshawsky, Diane ; Byrd, Donald R.H. ; Veltfort, Anna.
Spectrum a communicative course in english: student book.
Englewood Cliffs:
Regents,
1993.
Text.
Gaya MLA
Warshawsky, Diane ; Byrd, Donald R.H. ; Veltfort, Anna.
Spectrum a communicative course in english: student book.
Englewood Cliffs:
Regents,
1993.
Text.
Gaya Turabian
Warshawsky, Diane ; Byrd, Donald R.H. ; Veltfort, Anna.
Spectrum a communicative course in english: student book.
Englewood Cliffs:
Regents,
1993.
Print.