APA

United States Government Memorandum HS-121 [5-68], . (1970). Guidelines for "Safety-Town" pedestrian safety projects. Washington DC: United States Government Memorandum HS-121 [5-68].

Chicago

United States Government Memorandum HS-121 [5-68], . 1970. Guidelines for "Safety-Town" pedestrian safety projects. Washington DC: United States Government Memorandum HS-121 [5-68].

Harvard

United States Government Memorandum HS-121 [5-68], . (1970). Guidelines for "Safety-Town" pedestrian safety projects. Washington DC: United States Government Memorandum HS-121 [5-68].

MLA

United States Government Memorandum HS-121 [5-68], . Guidelines for "Safety-Town" pedestrian safety projects. Washington DC: United States Government Memorandum HS-121 [5-68]. 1970.