APA-čujuhus (7. p.)

ORANGE EDUCATION. (2017). HEIDI - GRADED READER - LEVEL 2. V CONNECT.

Chicago-čujuhus (17. p.)

ORANGE EDUCATION. HEIDI - GRADED READER - LEVEL 2. NEW DELHI: V CONNECT, 2017.

MLA-čujuhus (9. p.)

ORANGE EDUCATION. HEIDI - GRADED READER - LEVEL 2. V CONNECT, 2017.

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