APA
Hartman G., . (1955). America : land of freedom. San Antonio: D.C. Heath and Company.
Chicago
Hartman Gertrude, . 1955. America : land of freedom. San Antonio: D.C. Heath and Company.
Harvard
Hartman G., . (1955). America : land of freedom. San Antonio: D.C. Heath and Company.
MLA
Hartman Gertrude, . America : land of freedom. San Antonio: D.C. Heath and Company. 1955.
