Pengaruh electronic word of mouth (EWOM) terhadap kepercayaan merek pada media sosial di kalangan mahasiswi (Studi pada produk body lotion nivea) = The influence of electronic word of mouth (EWOM) on brand trust in social media among female students (Case study in nivea product body lotion) (Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2013)