Gaya APA
Mardius, M. (1990).
Graded Reading Series Fiction [Stage 1]: The Noble Koling Lumanau (Edisi).
Jakarta:
Gramedia Pustaka Utama.
Gaya MLA
Mardius, Markus.
"Graded Reading Series Fiction [Stage 1]: The Noble Koling Lumanau".
Edisi
Jakarta:
Gramedia Pustaka Utama,
1990.
Text.