Gaya APA
Virta, Nikolai, Shartse, Olga. ().
Alone .
Moscow:
Foreign Publishing House.
Gaya Chicago
Virta, Nikolai, Shartse, Olga.
Alone.
Moscow:
Foreign Publishing House,
.
Text.
Gaya MLA
Virta, Nikolai, Shartse, Olga.
Alone.
Moscow:
Foreign Publishing House,
.
Text.
Gaya Turabian
Virta, Nikolai, Shartse, Olga.
Alone.
Moscow:
Foreign Publishing House,
.
Print.