APA Style

Hewitt, S, ;, M, E, S. (1997). Tinggal Landas Bersama Teka-Teki Matematika = Take Off with Maths Puzzels . Jakarta: Quality Press.

MLA Style

Hewitt, Sally, ;, Mandjani,, Esther, S.. "Tinggal Landas Bersama Teka-Teki Matematika = Take Off with Maths Puzzels". Jakarta: Quality Press, 1997. BOOK.