Gaya APA

Heyworth, R, M. (2008). Science Discovery for Lower Secondary: Theory Workbook Volume 1 (2nd ed.). Singapore: Pearson Longman (Pearson Education South Asia Pte Ltd).

Gaya MLA

Heyworth, Rex, M.. "Science Discovery for Lower Secondary: Theory Workbook Volume 1". 2nd ed. Singapore: Pearson Longman (Pearson Education South Asia Pte Ltd), 2008. Text.