Dyfyniad APA

American Mathematical Society. American Mathematical Society translations V.21. 1958.

Dyfyniad Arddull Chicago

American Mathematical Society. American Mathematical Society Translations V.21. Rhode Island: 1958.

Dyfyniad MLA

American Mathematical Society. American Mathematical Society Translations V.21. 1958.

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