APA(7版)引用形式

Chopra, G. L. (1977). The Punjab as a sovereign state, 1799-1839. al-Biruni.

Chicagoスタイル(17版)引用形式

Chopra, Gulshan Lall. The Punjab as a Sovereign State, 1799-1839. Lahore: al-Biruni, 1977.

MLA(8版)引用形式

Chopra, Gulshan Lall. The Punjab as a Sovereign State, 1799-1839. al-Biruni, 1977.