Gaya APA
Shuard, E, W, A, H.
(1970).
Elementry Matematics
.
Hongkong:
Longman Group LTD.
Gaya MLA
Shuard, Elizabeth, Williams, And, Holary.
"Elementry Matematics".
Hongkong:
Longman Group LTD,
1970.
Text.