OSBORNE, M. P. 1. (1998). MAGIC TREE HOUSE # 15 VIKING SHIPS AT SUNRISE. RANDOM HOUSE.
Chicago-čujuhus (17. p.)OSBORNE, MARY. POPE RS 199. MAGIC TREE HOUSE # 15 VIKING SHIPS AT SUNRISE. NEW YORK: RANDOM HOUSE, 1998.
MLA-čujuhus (9. p.)OSBORNE, MARY. POPE RS 199. MAGIC TREE HOUSE # 15 VIKING SHIPS AT SUNRISE. RANDOM HOUSE, 1998.
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