Joshi, K., Hasan, R., & Asian Development Bank. (2009). Surveys of informal sector enterprises: Some measurement issues. Asian Development Bank.
Dyfyniad Arddull ChicagoJoshi, Kaushal, Rana Hasan, and Asian Development Bank. Surveys of Informal Sector Enterprises: Some Measurement Issues. Mandaluyong City: Asian Development Bank, 2009.
Dyfyniad MLAJoshi, Kaushal, et al. Surveys of Informal Sector Enterprises: Some Measurement Issues. Asian Development Bank, 2009.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.