APA Citation

Harahap, S. S. Our country's national parks. Raja Grafindo Persada.

Chicago Style Citation

Harahap, Sofyan Syafri. Our Country's National Parks. Raja Grafindo Persada.

MLA Citation

Harahap, Sofyan Syafri. Our Country's National Parks. Raja Grafindo Persada.

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