APA (7th ed.) Citation

Gruber, P. M., & Lekkerkerker, C. G. (1987). Geometry of numbers (2. ed.). North-Holland.

Chicago Style (17th ed.) Citation

Gruber, Peter M., and Cornelis G. Lekkerkerker. Geometry of Numbers. 2. ed. Amsterdam [u.a.]: North-Holland, 1987.

MLA (9th ed.) Citation

Gruber, Peter M., and Cornelis G. Lekkerkerker. Geometry of Numbers. 2. ed. North-Holland, 1987.