APA引文

Santos, R. P., & Hopkins, G. M. (1965). The leaden echo and the golden echo: For baritone. s.n.].

Chicago Style (17th ed.) Citation

Santos, Ramon Pagayon, and Gerald Manley Hopkins. The Leaden Echo and the Golden Echo: For Baritone. [S.l: s.n.], 1965.

MLA引文

Santos, Ramon Pagayon, and Gerald Manley Hopkins. The Leaden Echo and the Golden Echo: For Baritone. s.n.], 1965.

警告：這些引文格式不一定是100％准確.