(1987). Encyclopedia of physical science and technology: An Encyclopedic reference complete in fifteen volumes, with volumn 15 the index volumn. Orlando: Academic Press.
Dyfyniad Arddull ChicagoEncyclopedia of Physical Science and Technology: An Encyclopedic Reference Complete in Fifteen Volumes, With Volumn 15 the Index Volumn. Orlando: Academic Press, 1987.
Dyfyniad MLAEncyclopedia of Physical Science and Technology: An Encyclopedic Reference Complete in Fifteen Volumes, With Volumn 15 the Index Volumn. Orlando: Academic Press, 1987.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.