APA Style

Paul, D, L., Jeanne, E, O. (2015). Practical research : planning and design (Edisi 11, Global Edisi). Malaysia.: Pearson Education Limited.

MLA Style

Paul, D., Leedy,., Jeanne, Ellis, Ormrod,. "Practical research : planning and design". Edisi 11, Global Edisi Malaysia.: Pearson Education Limited, 2015. Text.