Gaya APA

Skalla, ., Skalla, W. (2014). E-book The Mystery of Nils. Part 1 - Norwegian Course for Beginners. Learn Norwegian, Enjoy the Story . : SKAPAGO PUBLISHING.

Gaya MLA

Skalla, ., Skalla, Werner. "E-book The Mystery of Nils. Part 1 - Norwegian Course for Beginners. Learn Norwegian, Enjoy the Story". : SKAPAGO PUBLISHING, 2014. Text.