Sandberg Sheryl. (2017). Option B Facing Adeversity. Penguin.
Lua i Stíl Chicago (17ú heag.)Sandberg Sheryl. Option B Facing Adeversity. Penguin, 2017.
Lua MLA (9ú heag.)Sandberg Sheryl. Option B Facing Adeversity. Penguin, 2017.
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