Lenburg, J. (2007). Viva- Facts On File guide to research. Viva Books Pvt. ltd..
Chicagoスタイル(17版)引用形式Lenburg, Jeff. Viva- Facts On File Guide to Research. New Delhi: Viva Books Pvt. ltd., 2007.
MLA(8版)引用形式Lenburg, Jeff. Viva- Facts On File Guide to Research. Viva Books Pvt. ltd., 2007.
警告: この引用は必ずしも正確ではありません.