APA (7. basım) Alıntı

DACOSTA, S. STEP UP ! WITH GRAMMAR- 7. FRANK EDUCATIONAL AIDS.

Chicago Style (17. basım) Atıf

DACOSTA, STEPHEN. STEP UP ! WITH GRAMMAR- 7. NEW DELHI: FRANK EDUCATIONAL AIDS.

MLA (9th ed.) Atıf

DACOSTA, STEPHEN. STEP UP ! WITH GRAMMAR- 7. FRANK EDUCATIONAL AIDS.