Gaya APA

Clark, A, C. (1986). Arthur C.Clark`s Juli 20, 2019 : life in the 21 st.century . New York: An Omni Book.

Gaya MLA

Clark, Arthur, Charles. "Arthur C.Clark`s Juli 20, 2019 : life in the 21 st.century". New York: An Omni Book, 1986. Text.