APA (7. basım) Alıntı

ERRIDGE ANDREW. (2001). BEST PRACTICE PROCUREMENT. GOWER.

Chicago Style (17. basım) Atıf

ERRIDGE ANDREW. BEST PRACTICE PROCUREMENT. ENGLAND: GOWER, 2001.

MLA (9th ed.) Atıf

ERRIDGE ANDREW. BEST PRACTICE PROCUREMENT. GOWER, 2001.