APA (7th ed.) Citation

Rival, I., & Wille, R. (1978). Lattices freely generated by partially ordered sets: Which can be "drawn"? Techn. Hochsch.

Chicago Style (17th ed.) Citation

Rival, Ivan, and Rudolf Wille. Lattices Freely Generated by Partially Ordered Sets: Which Can Be "Drawn"? Darmstadt: Techn. Hochsch, 1978.

MLA (9th ed.) Citation

Rival, Ivan, and Rudolf Wille. Lattices Freely Generated by Partially Ordered Sets: Which Can Be "Drawn"? Techn. Hochsch, 1978.