Gaya APA

Young, F, H. (1964). Essential of algebra and trigonometry. (1964). : Masssachusetts : Addison-Wesley, Pub., Co.,.

Gaya MLA

Young, Frederick, H.. "Essential of algebra and trigonometry.". 1964 : Masssachusetts : Addison-Wesley, Pub., Co.,, 1964. Text.