Analisis pengaruh religiositas, kepercayaan, familiarity, dan iklan wakaf melalui altruistic vs egoistic appeals terhadap intensi berwakaf uang dan perilaku aktual berwakaf uang: metode eksperimen kelas = The analysis of religiosity trust familiarity and cash waqf advertisement using altruistic vs egoistic appeals on intention to participate in cash waqf and actual behavior: a classroom experiment