Bullard's Alphabets : a selective showing of types most frequently used in modern typography : Linotype, Monotype, Ludlow, Foundry, Photolettering.

MLA

Howard O. Bullard, Inc. and Atha Tehon Thiras Art and Design Collection (University of Pennsylvania). Bullard's Alphabets : a selective showing of types most frequently used in modern typography : Linotype, Monotype, Ludlow, Foundry, Photolettering. New York : Howard O. Bullard, Inc., 150 Varick Street, [1955]

APA

Howard O. Bullard, I. & Atha Tehon Thiras Art and Design Collection (University of Pennsylvania). (1955). Bullard's Alphabets : a selective showing of types most frequently used in modern typography : Linotype, Monotype, Ludlow, Foundry, Photolettering. New York : Howard O. Bullard, Inc., 150 Varick Street.

Chicago

Howard O. Bullard, Inc. and Atha Tehon Thiras Art and Design Collection (University of Pennsylvania). Bullard's Alphabets : a selective showing of types most frequently used in modern typography : Linotype, Monotype, Ludlow, Foundry, Photolettering. New York : Howard O. Bullard, Inc., 150 Varick Street, [1955]