APA (7th ed.) Citation

Siregar, I. P. K. (1989). Ekonomi Koperasi 2. PT Intan Pariwara.

Chicago Style (17th ed.) Citation

Siregar, Ir. Poppy Kurniawati. Ekonomi Koperasi 2. PT Intan Pariwara, 1989.

MLA (8th ed.) Citation

Siregar, Ir. Poppy Kurniawati. Ekonomi Koperasi 2. PT Intan Pariwara, 1989.

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