Παραπομπή APA

WILLIAM R STANEK. (2013). Optimizing widows 7. PHI Learning.

Παραπομπή Chicago Style

WILLIAM R STANEK. Optimizing Widows 7. New Delhi: PHI Learning, 2013.

Παραπομπή MLA

WILLIAM R STANEK. Optimizing Widows 7. PHI Learning, 2013.