Hopkins, S. a. R. (1984). A recovery plan for marine turtles. National Marine Fisheries Service.
芝加哥风格引文Hopkins, S.R. and Richardson. A Recovery Plan for Marine Turtles. Washington, D.C: National Marine Fisheries Service, 1984.
MLA引文Hopkins, S.R. and Richardson. A Recovery Plan for Marine Turtles. National Marine Fisheries Service, 1984.
警告：这些引文格式不一定是100％准确.