Anonymous, U (2018). A STUDY OF THE IMPACT OF INSTRUCTIONAL MATERIALS IN TEACHING AND LEARNING BIOLOGY IN SENOIR SECONDARY SCHOOLS (A CASE STUDY OF ENUGU NORTH LOCAL GOVERNMENT AREA).. Afribary.com: Retrieved December 14, 2019, from https://afribary.com/works/a-study-of-the-impact-of-instructional-materials-in-teaching-and-learning-biology-in-senoir-secondary-schools-a-case-study-of-enugu-north-local-government-area
User, Anonymous. "A STUDY OF THE IMPACT OF INSTRUCTIONAL MATERIALS IN TEACHING AND LEARNING BIOLOGY IN SENOIR SECONDARY SCHOOLS (A CASE STUDY OF ENUGU NORTH LOCAL GOVERNMENT AREA)." Afribary.com. Afribary.com, 03 Feb. 2018, https://afribary.com/works/a-study-of-the-impact-of-instructional-materials-in-teaching-and-learning-biology-in-senoir-secondary-schools-a-case-study-of-enugu-north-local-government-area . Accessed 14 Dec. 2019.
User, Anonymous. "A STUDY OF THE IMPACT OF INSTRUCTIONAL MATERIALS IN TEACHING AND LEARNING BIOLOGY IN SENOIR SECONDARY SCHOOLS (A CASE STUDY OF ENUGU NORTH LOCAL GOVERNMENT AREA).". Afribary.com, Afribary.com, 03 Feb. 2018. Web. 14 Dec. 2019. < https://afribary.com/works/a-study-of-the-impact-of-instructional-materials-in-teaching-and-learning-biology-in-senoir-secondary-schools-a-case-study-of-enugu-north-local-government-area >.
User, Anonymous. "A STUDY OF THE IMPACT OF INSTRUCTIONAL MATERIALS IN TEACHING AND LEARNING BIOLOGY IN SENOIR SECONDARY SCHOOLS (A CASE STUDY OF ENUGU NORTH LOCAL GOVERNMENT AREA)." Afribary.com (2018). Accessed December 14, 2019. https://afribary.com/works/a-study-of-the-impact-of-instructional-materials-in-teaching-and-learning-biology-in-senoir-secondary-schools-a-case-study-of-enugu-north-local-government-area