Dyfyniad APA

INFA PUBLICATIONS. (1988). PRESS AND ADVERTISERS YEAR BOOK 1988 (25.). INFA PUBLICATIONS.

Dyfyniad Arddull Chicago

INFA PUBLICATIONS. PRESS AND ADVERTISERS YEAR BOOK 1988. 25. NEW DELHI: INFA PUBLICATIONS, 1988.

Dyfyniad MLA

INFA PUBLICATIONS. PRESS AND ADVERTISERS YEAR BOOK 1988. 25. INFA PUBLICATIONS, 1988.

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