Lontoc, L. M., & Valerio, S. T. Trend in on-farm and off-farm income in the Philippines (1985-1994).
芝加哥风格引文Lontoc, Lovely Marie, 与 Sheila Theresa Valerio. Trend in On-farm and Off-farm Income in the Philippines (1985-1994).
MLA引文Lontoc, Lovely Marie, 与 Sheila Theresa Valerio. Trend in On-farm and Off-farm Income in the Philippines (1985-1994).
警告：这些引文格式不一定是100％准确.