APA Citation

Purba, R. Business principles for secondary school. Yayasan Pustaka Maritim.

Chicago Style Citation

Purba, Radiks. Business Principles for Secondary School. Yayasan Pustaka Maritim.

MLA Citation

Purba, Radiks. Business Principles for Secondary School. Yayasan Pustaka Maritim.

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