Dyfyniad APA

Encyclopaedia of science. (1977). Readers guide to the McGraw Hill encyclopaedia of science and technology. Mc Graw Hill Book company Inc.

Dyfyniad Arddull Chicago

Encyclopaedia of science. Readers Guide to the McGraw Hill Encyclopaedia of Science and Technology. Mc Graw Hill Book company Inc, 1977.

Dyfyniad MLA

Encyclopaedia of science. Readers Guide to the McGraw Hill Encyclopaedia of Science and Technology. Mc Graw Hill Book company Inc, 1977.

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