APA (7th ed.) Citation

Grotemeyer, K. P., & Letzner, E. (1969). Topologie. Bibliograph. Inst.

Chicago Style (17th ed.) Citation

Grotemeyer, Karl Peter, and Eberhard Letzner. Topologie. Mannheim ; Wien ; Zürich: Bibliograph. Inst, 1969.

MLA (9th ed.) Citation

Grotemeyer, Karl Peter, and Eberhard Letzner. Topologie. Bibliograph. Inst, 1969.

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