Tohutoro APA (7th ed.)

Levine, H. (1985). Classifying immersions into R4 over stable maps of 3-manifolds into R2. Springer-Verlag.

Tohutoru Kātū Chicago (17th ed.)

Levine, Harold. Classifying Immersions into R4 over Stable Maps of 3-manifolds into R2. Berlín: Springer-Verlag, 1985.

Tohutoro MLA (9th ed.)

Levine, Harold. Classifying Immersions into R4 over Stable Maps of 3-manifolds into R2. Springer-Verlag, 1985.