Santos, M. I., & Serrano, J. The informal sector: Focus on four vending areas.
芝加哥风格引文Santos, Ma. Imelda, 与 Jonathan Serrano. The Informal Sector: Focus on Four Vending Areas.
MLA引文Santos, Ma. Imelda, 与 Jonathan Serrano. The Informal Sector: Focus on Four Vending Areas.
警告：这些引文格式不一定是100％准确.