APA
(2017). SECONDARY PHYSICS:STUDENTS' BOOK FOUR. KENYA: KLB.
Chicago
2017. SECONDARY PHYSICS:STUDENTS' BOOK FOUR. KENYA: KLB.
Harvard
(2017). SECONDARY PHYSICS:STUDENTS' BOOK FOUR. KENYA: KLB.
MLA
SECONDARY PHYSICS:STUDENTS' BOOK FOUR. KENYA: KLB. 2017.