Williamson, N. E. (1977). A comparison of family planning users in the project and non-project areas: Bohol, 1975. Bohol MCH/FP Project.
芝加哥风格引文Williamson, Nancy E. A Comparison of Family Planning Users in the Project and Non-project Areas: Bohol, 1975. Tagbilaran City: Bohol MCH/FP Project, 1977.
MLA引文Williamson, Nancy E. A Comparison of Family Planning Users in the Project and Non-project Areas: Bohol, 1975. Bohol MCH/FP Project, 1977.
警告：这些引文格式不一定是100％准确.