Gaya APA
Sarton, May. (1980).
Halfway to silence .
New York:
W.W. Norton & Company.
Gaya Chicago
Sarton, May.
Halfway to silence.
New York:
W.W. Norton & Company,
1980.
Text.
Gaya MLA
Sarton, May.
Halfway to silence.
New York:
W.W. Norton & Company,
1980.
Text.
Gaya Turabian
Sarton, May.
Halfway to silence.
New York:
W.W. Norton & Company,
1980.
Print.