APA
Penny R. K., Marriott D. L., . (1971). Desing for creep. [s.l.]: [s.n.].
Chicago
Penny R K, Marriott D L, . 1971. Desing for creep. [s.l.]: [s.n.].
Harvard
Penny R. K., Marriott D. L., . (1971). Desing for creep. [s.l.]: [s.n.].
MLA
Penny R K, Marriott D L, . Desing for creep. [s.l.]: [s.n.]. 1971.
