Dyfyniad APA

Wolff, H. (1990). A bibliography of occupational health and safety in the Philippines (1949-1989).

Dyfyniad Arddull Chicago

Wolff, Hans-Juergen. A Bibliography of Occupational Health and Safety in the Philippines (1949-1989). Manila : Edith Flores Wolff & Hans-Juergen Wolff, 1990.

Dyfyniad MLA

Wolff, Hans-Juergen. A Bibliography of Occupational Health and Safety in the Philippines (1949-1989). 1990.

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