Gaya APA

Johansen, S. (). The Willingness to pay for visitors to urban parks : A Case study in urban park of lapangan merdeka pematangsiantar city, indonesia. ( Tesis 2019 ) . : .

Gaya MLA

Johansen, Silalahi. "The Willingness to pay for visitors to urban parks : A Case study in urban park of lapangan merdeka pematangsiantar city, indonesia. ( Tesis 2019 )". : , . Text.