This research aimed to find the best model for research skills. Its goal is to ensure that the exogenous variables of reading, writing, and learning strategies substantially correlate with the endogenous variable of research skills. In addition, to establish the optimal model on research skills, non-experimental correlational research design and structural equation models were used. However, 407 college students from public and private colleges and universities in Region X were chosen using a stratified random selecting technique. The mean, Pearson r, regression, and structural equation models were used (SEM). The study’s fifth model adapted outcome shows that exogenous factors have a significant association with endogenous variables. Exogenous variables, on the other hand, have a high descriptive quality. Reading strategies include pre-reading, during reading, and after reading; writing strategies include pre-writing, when writing, and revision; learning strategies include planning stage, doing stage, what I want to do well, and my feeling about the task; and the endogenous variable acquired a high descriptive level of research skills, which included reading and understanding research literature, collecting research data, programming skills, and analyzing a data set, scientific communication, and understanding of the field and the research process.