APA

National Endowment for the Arts, . (1992). Challenge: application guidelines. Washington: National Endowment for the Arts.

Chicago

National Endowment for the Arts, . 1992. Challenge: application guidelines. Washington: National Endowment for the Arts.

Harvard

National Endowment for the Arts, . (1992). Challenge: application guidelines. Washington: National Endowment for the Arts.

MLA

National Endowment for the Arts, . Challenge: application guidelines. Washington: National Endowment for the Arts. 1992.