Vriesenga, D. Trees and plants: Grades 1-2. Instructional fair.
Chicago-čujuhus (17. p.)Vriesenga, Daryl. Trees and Plants: Grades 1-2. Michigan: Instructional fair.
MLA-čujuhus (9. p.)Vriesenga, Daryl. Trees and Plants: Grades 1-2. Instructional fair.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.