Gaya APA
FEHR, H, F. et al (1964).
AN INTRODUCTION TO SETS, PROBABILITY AND HYPOTHESIS TESTING .
Boston:
D. C. HEATH AND COMPANY.
Gaya MLA
FEHR, Howard, F.. et al.
"AN INTRODUCTION TO SETS, PROBABILITY AND HYPOTHESIS TESTING".
Boston:
D. C. HEATH AND COMPANY,
1964.
Textbook.