APA引文

Gershin, G. Gershwin: Porgy & Bess etc. s.n.].

Chicago Style (17th ed.) Citation

Gershin, George. Gershwin: Porgy & Bess Etc. [S.l: s.n.].

MLA引文

Gershin, George. Gershwin: Porgy & Bess Etc. s.n.].

警告：這些引文格式不一定是100％准確.