Karmellia, F., and L. Lufri. “Development of an E-Booklet With Emotional Spiritual Quotient (ESQ) Nuances on Virus Material for Class X SMA/MA”. PENBIOS: JURNAL PENDIDIKAN BIOLOGI DAN SAINS, Vol. 8, no. 01, May 2023, pp. 01-10, doi:10.51673/penbios.v8i01.1447.