APA (7th ed.) Citation

Chang, R. Y. (1998). Langkah-langkah pemecahan masalah: V. 1. Saint Joseph's University.

Chicago Style (17th ed.) Citation

Chang, Richard Y. Langkah-langkah Pemecahan Masalah: V. 1. Saint Joseph's University, 1998.

MLA (8th ed.) Citation

Chang, Richard Y. Langkah-langkah Pemecahan Masalah: V. 1. Saint Joseph's University, 1998.

Warning: These citations may not always be 100% accurate.