APA

Grünbaum B., National Science Foundation, . (1972). Arrangements and spreads. Providence, RI: Conference Board of the Mathematical Sciences by the American Math. Soc.

Chicago

Grünbaum Branko, National Science Foundation, . 1972. Arrangements and spreads. Providence, RI: Conference Board of the Mathematical Sciences by the American Math. Soc.

Harvard

Grünbaum B., National Science Foundation, . (1972). Arrangements and spreads. Providence, RI: Conference Board of the Mathematical Sciences by the American Math. Soc.

MLA

Grünbaum Branko, National Science Foundation, . Arrangements and spreads. Providence, RI: Conference Board of the Mathematical Sciences by the American Math. Soc. 1972.