Gaya APA
      ALLEN, R, G, D. (1938).
    MATHEMATICAL ANALYSIS FOR ECONOMISTS .
    LONDON:
  THE ENGLISH LANGUAGE BOOK SOCIETY and MACMILLAN.
  
Gaya MLA
      ALLEN, R., G., D..
    "MATHEMATICAL ANALYSIS FOR ECONOMISTS".
    
    LONDON:
  THE ENGLISH LANGUAGE BOOK SOCIETY and MACMILLAN,
  1938.
  Text.