Speroff, L., & Darney, P. (2003). Pedoman Klinis Kontrasepsi. EGC.
芝加哥风格引文Speroff, Leon, 与 Philip Darney. Pedoman Klinis Kontrasepsi. EGC, 2003.
MLA引文Speroff, Leon, 与 Philip Darney. Pedoman Klinis Kontrasepsi. EGC, 2003.
警告：这些引文格式不一定是100％准确.
APA引文