Dyfyniad APA

Small Industry Research Institute. (1989). Directory of pulp, paper, paper products and speciality papers (Directory of pulp paper and paper products) (2nd rev. ed.). Small Industry Research Institute.

Dyfyniad Arddull Chicago

Small Industry Research Institute. Directory of Pulp, Paper, Paper Products and Speciality Papers (Directory of Pulp Paper and Paper Products). 2nd rev. ed. Delhi: Small Industry Research Institute, 1989.

Dyfyniad MLA

Small Industry Research Institute. Directory of Pulp, Paper, Paper Products and Speciality Papers (Directory of Pulp Paper and Paper Products). 2nd rev. ed. Small Industry Research Institute, 1989.

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