Gaya APA

BARTH.Peter.S, ., GISSER.Micha, . (1970). Basic Economics 1Ed. (1). United States of America: Int.Textbook Co..

Gaya MLA

BARTH.Peter.S, ., GISSER.Micha, . "Basic Economics 1Ed.". 1 United States of America: Int.Textbook Co., 1970. Textbook.