APA (7th ed.) Citation

Niemi, T. (1982). Definition of the hierarchical relation and its projection.

Chicago Style (17th ed.) Citation

Niemi, Timo. Definition of the Hierarchical Relation and Its Projection. Tampere, 1982.

MLA (9th ed.) Citation

Niemi, Timo. Definition of the Hierarchical Relation and Its Projection. 1982.

Warning: These citations may not always be 100% accurate.