Gaya APA

Durr, W, K., Alsin, J, M, L, P, M, L. (1974). Signposts . United States of America: Houghton Mifflin Company.

Gaya MLA

Durr, William, K.., Alsin, Jean, M., Le, Pere,, Mary, Lou. "Signposts". United States of America: Houghton Mifflin Company, 1974. Text.