Dyfyniad APA

Drs.Slamet Riyanto. (2012). Speaking English is Easy. Yogyakarta: Pustaka Widyatama.

Dyfyniad Arddull Chicago

Drs.Slamet Riyanto. Speaking English Is Easy. Yogyakarta: Pustaka Widyatama, 2012.

Dyfyniad MLA

Drs.Slamet Riyanto. Speaking English Is Easy. Yogyakarta: Pustaka Widyatama, 2012.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.