Cita APA (7th ed.)

ebrary, Inc, & Apanasov, B. N. (1992). Topology '90. W. de Gruyter.

Cita Chicago (17th ed.)

ebrary, Inc, i B. N. Apanasov. Topology '90. Berlin ; New York: W. de Gruyter, 1992.

Cita MLA (9th ed.)

ebrary, Inc, i B. N. Apanasov. Topology '90. W. de Gruyter, 1992.