Dyfyniad APA

Stovall, W. (1978). Presidential emergemcy. Hodder and stoughton.

Dyfyniad Arddull Chicago

Stovall, Walter. Presidential Emergemcy. London: Hodder and stoughton, 1978.

Dyfyniad MLA

Stovall, Walter. Presidential Emergemcy. Hodder and stoughton, 1978.

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