APA(7版)引用形式

Naipaul, V. S. (1971). In a free state. Penguin Books.

Chicagoスタイル(17版)引用形式

Naipaul, V. S. In a Free State. Harmondsworth: Penguin Books, 1971.

MLA(9版)引用形式

Naipaul, V. S. In a Free State. Penguin Books, 1971.