Gaya APA

Byrnes, Jonathan L.. (2010). Islands of Profit in a Sea of Red Ink: Why 40% of Your Business is Unprofitable and How to Fix it . New York: Portfolio Penguin.

Gaya Chicago

Byrnes, Jonathan L.. Islands of Profit in a Sea of Red Ink: Why 40% of Your Business is Unprofitable and How to Fix it. New York: Portfolio Penguin, 2010. Buku.

Gaya MLA

Byrnes, Jonathan L.. Islands of Profit in a Sea of Red Ink: Why 40% of Your Business is Unprofitable and How to Fix it. New York: Portfolio Penguin, 2010. Buku.

Gaya Turabian

Byrnes, Jonathan L.. Islands of Profit in a Sea of Red Ink: Why 40% of Your Business is Unprofitable and How to Fix it. New York: Portfolio Penguin, 2010. Buku.