Dyfyniad APA

Richardson, E. C. (1930). Classification, theoretical and practical (3rd ed.). Shoe String Press.

Dyfyniad Arddull Chicago

Richardson, Ernest Cushing. Classification, Theoretical and Practical. 3rd ed. Hamden, Conn: Shoe String Press, 1930.

Dyfyniad MLA

Richardson, Ernest Cushing. Classification, Theoretical and Practical. 3rd ed. Shoe String Press, 1930.

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