Gaya APA

Willerding, ., Engelsohn, . (1961). Matematiccs The Alphabet Of Science 3e (Cet.3). Amerika: United State Of Amerika.

Gaya MLA

Willerding, ., Engelsohn, . "Matematiccs The Alphabet Of Science 3e". Cet.3 Amerika: United State Of Amerika, 1961. Text.