APA

National Endowment for the Humanities, . (19). Summer seminars for school teachers: guidelines and application forms for participants. Washington: The Endowment.

Chicago

National Endowment for the Humanities, . 19. Summer seminars for school teachers: guidelines and application forms for participants. Washington: The Endowment.

Harvard

National Endowment for the Humanities, . (19). Summer seminars for school teachers: guidelines and application forms for participants. Washington: The Endowment.

MLA

National Endowment for the Humanities, . Summer seminars for school teachers: guidelines and application forms for participants. Washington: The Endowment. 19.