Philip Pullman. (2017). His Dark Materials: The Subtle Knife. SCHOLASTIC.
Lua i Stíl Chicago (17ú heag.)Philip Pullman. His Dark Materials: The Subtle Knife. SCHOLASTIC, 2017.
Lua MLA (9ú heag.)Philip Pullman. His Dark Materials: The Subtle Knife. SCHOLASTIC, 2017.
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