APA
Abbs B., .Blueprint upper intermediate : teacher's book / Brian Abbs & Ingrid Freebairn. Edinburgh Gate, Harlow, Essex, England : Longman, 1993: Edinburgh Gate, Harlow, Essex, England : Longman, 1993.
Chicago
Abbs Brian, .Blueprint upper intermediate : teacher's book / Brian Abbs & Ingrid Freebairn. Edinburgh Gate, Harlow, Essex, England : Longman, 1993: Edinburgh Gate, Harlow, Essex, England : Longman, 1993.
Harvard
Abbs B., .Blueprint upper intermediate : teacher's book / Brian Abbs & Ingrid Freebairn. Edinburgh Gate, Harlow, Essex, England : Longman, 1993: Edinburgh Gate, Harlow, Essex, England : Longman, 1993.
MLA
Abbs Brian, .Edinburgh Gate, Harlow, Essex, England : Longman, 1993: Edinburgh Gate, Harlow, Essex, England : Longman, 1993. .