Gaya APA

al., E. et al (s.a.,2002,2008,2011,2021,2022). Metodologi Penelitian (Ed. 1,I,-). Purwokerto: Fakultas Psikologi UMP.

Gaya MLA

al., Et. et al. "Metodologi Penelitian". Ed. 1,I,- Purwokerto: Fakultas Psikologi UMP, s.a.,2002,2008,2011,2021,2022. Text.