Each language has a different system for the combining of morphemes, and within each system there are rigid restrictions. In the syntax there may be such alternative orders as 'John ran away', 'Away ran John', and 'Away John ran', but in the morphology of most languages the order is fixed, and in some languages it is very complicated.
- Nida (1949), a pag.78

In the structure of words we find morphemes which belong to the same order or to different orders.
- Nida (1949), a pag.84

The formal combinig of morphemes involves two factors: order and juncture.
- Nida (1949), a pag.85

Morphemes of the same order occur in the same relative order, counting from the nucleus, and are mutually exclusive. They usually belong to the same category.
- Nida (1949), a pag.110