APA ציטוט

Lowen, R. (1985). On the existence of natural non-topological, fuzzy topological spaces. Heldermann.

Chicago Edition Citation

Lowen, R. On the Existence of Natural Non-topological, Fuzzy Topological Spaces. Berlin: Heldermann, 1985.

ציטוט MLA

Lowen, R. On the Existence of Natural Non-topological, Fuzzy Topological Spaces. Heldermann, 1985.