Dyfyniad APA

WHITEHEAD GEOFFREY. (1982). PITMAN BUSINESS CORRESPONDENCE. PITMAN PUBLICATIONS.

Dyfyniad Arddull Chicago

WHITEHEAD GEOFFREY. PITMAN BUSINESS CORRESPONDENCE. LONDON: PITMAN PUBLICATIONS, 1982.

Dyfyniad MLA

WHITEHEAD GEOFFREY. PITMAN BUSINESS CORRESPONDENCE. PITMAN PUBLICATIONS, 1982.

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