Grebby's modern business training / completely revised by Ronald Warson. - 20th ed. / - London : Macdonald and Evans, 1972. - x, 301 p. : ill., facsims., forms ; 22 cm. Previous ed. 1967 Includes index Bibliographyp.288-289 ISBN: 0712113541 LC Class. No.: HF5351 Dewey Class. No.: 650